diff options
| author | Christoph Hellwig <hch@infradead.org> | 2011-08-12 16:21:35 -0500 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2011-08-12 16:21:35 -0500 |
| commit | c59d87c460767bc35dafd490139d3cfe78fb8da4 (patch) | |
| tree | 2aad8261f86488e501d9645bd35d1398906da46d /fs/xfs/quota | |
| parent | 06f8e2d6754dc631732415b741b5aa58a0f7133f (diff) | |
xfs: remove subdirectories
Use the move from Linux 2.6 to Linux 3.x as an excuse to kill the
annoying subdirectories in the XFS source code. Besides the large
amount of file rename the only changes are to the Makefile, a few
files including headers with the subdirectory prefix, and the binary
sysctl compat code that includes a header under fs/xfs/ from
kernel/.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/quota')
| -rw-r--r-- | fs/xfs/quota/xfs_dquot.c | 1454 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_dquot.h | 137 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_dquot_item.c | 529 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_dquot_item.h | 48 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_qm.c | 2416 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_qm.h | 166 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_qm_bhv.c | 176 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_qm_stats.c | 105 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_qm_stats.h | 53 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_qm_syscalls.c | 906 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_quota_priv.h | 53 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_trans_dquot.c | 890 |
12 files changed, 0 insertions, 6933 deletions
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c deleted file mode 100644 index db62959bed13..000000000000 --- a/fs/xfs/quota/xfs_dquot.c +++ /dev/null @@ -1,1454 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_itable.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_trans_space.h" -#include "xfs_trans_priv.h" -#include "xfs_qm.h" -#include "xfs_trace.h" - - -/* - LOCK ORDER - - inode lock (ilock) - dquot hash-chain lock (hashlock) - xqm dquot freelist lock (freelistlock - mount's dquot list lock (mplistlock) - user dquot lock - lock ordering among dquots is based on the uid or gid - group dquot lock - similar to udquots. Between the two dquots, the udquot - has to be locked first. - pin lock - the dquot lock must be held to take this lock. - flush lock - ditto. -*/ - -#ifdef DEBUG -xfs_buftarg_t *xfs_dqerror_target; -int xfs_do_dqerror; -int xfs_dqreq_num; -int xfs_dqerror_mod = 33; -#endif - -static struct lock_class_key xfs_dquot_other_class; - -/* - * Allocate and initialize a dquot. We don't always allocate fresh memory; - * we try to reclaim a free dquot if the number of incore dquots are above - * a threshold. - * The only field inside the core that gets initialized at this point - * is the d_id field. The idea is to fill in the entire q_core - * when we read in the on disk dquot. - */ -STATIC xfs_dquot_t * -xfs_qm_dqinit( - xfs_mount_t *mp, - xfs_dqid_t id, - uint type) -{ - xfs_dquot_t *dqp; - boolean_t brandnewdquot; - - brandnewdquot = xfs_qm_dqalloc_incore(&dqp); - dqp->dq_flags = type; - dqp->q_core.d_id = cpu_to_be32(id); - dqp->q_mount = mp; - - /* - * No need to re-initialize these if this is a reclaimed dquot. - */ - if (brandnewdquot) { - INIT_LIST_HEAD(&dqp->q_freelist); - mutex_init(&dqp->q_qlock); - init_waitqueue_head(&dqp->q_pinwait); - - /* - * Because we want to use a counting completion, complete - * the flush completion once to allow a single access to - * the flush completion without blocking. - */ - init_completion(&dqp->q_flush); - complete(&dqp->q_flush); - - trace_xfs_dqinit(dqp); - } else { - /* - * Only the q_core portion was zeroed in dqreclaim_one(). - * So, we need to reset others. - */ - dqp->q_nrefs = 0; - dqp->q_blkno = 0; - INIT_LIST_HEAD(&dqp->q_mplist); - INIT_LIST_HEAD(&dqp->q_hashlist); - dqp->q_bufoffset = 0; - dqp->q_fileoffset = 0; - dqp->q_transp = NULL; - dqp->q_gdquot = NULL; - dqp->q_res_bcount = 0; - dqp->q_res_icount = 0; - dqp->q_res_rtbcount = 0; - atomic_set(&dqp->q_pincount, 0); - dqp->q_hash = NULL; - ASSERT(list_empty(&dqp->q_freelist)); - - trace_xfs_dqreuse(dqp); - } - - /* - * In either case we need to make sure group quotas have a different - * lock class than user quotas, to make sure lockdep knows we can - * locks of one of each at the same time. - */ - if (!(type & XFS_DQ_USER)) - lockdep_set_class(&dqp->q_qlock, &xfs_dquot_other_class); - - /* - * log item gets initialized later - */ - return (dqp); -} - -/* - * This is called to free all the memory associated with a dquot - */ -void -xfs_qm_dqdestroy( - xfs_dquot_t *dqp) -{ - ASSERT(list_empty(&dqp->q_freelist)); - - mutex_destroy(&dqp->q_qlock); - kmem_zone_free(xfs_Gqm->qm_dqzone, dqp); - - atomic_dec(&xfs_Gqm->qm_totaldquots); -} - -/* - * This is what a 'fresh' dquot inside a dquot chunk looks like on disk. - */ -STATIC void -xfs_qm_dqinit_core( - xfs_dqid_t id, - uint type, - xfs_dqblk_t *d) -{ - /* - * Caller has zero'd the entire dquot 'chunk' already. - */ - d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); - d->dd_diskdq.d_version = XFS_DQUOT_VERSION; - d->dd_diskdq.d_id = cpu_to_be32(id); - d->dd_diskdq.d_flags = type; -} - -/* - * If default limits are in force, push them into the dquot now. - * We overwrite the dquot limits only if they are zero and this - * is not the root dquot. - */ -void -xfs_qm_adjust_dqlimits( - xfs_mount_t *mp, - xfs_disk_dquot_t *d) -{ - xfs_quotainfo_t *q = mp->m_quotainfo; - - ASSERT(d->d_id); - - if (q->qi_bsoftlimit && !d->d_blk_softlimit) - d->d_blk_softlimit = cpu_to_be64(q->qi_bsoftlimit); - if (q->qi_bhardlimit && !d->d_blk_hardlimit) - d->d_blk_hardlimit = cpu_to_be64(q->qi_bhardlimit); - if (q->qi_isoftlimit && !d->d_ino_softlimit) - d->d_ino_softlimit = cpu_to_be64(q->qi_isoftlimit); - if (q->qi_ihardlimit && !d->d_ino_hardlimit) - d->d_ino_hardlimit = cpu_to_be64(q->qi_ihardlimit); - if (q->qi_rtbsoftlimit && !d->d_rtb_softlimit) - d->d_rtb_softlimit = cpu_to_be64(q->qi_rtbsoftlimit); - if (q->qi_rtbhardlimit && !d->d_rtb_hardlimit) - d->d_rtb_hardlimit = cpu_to_be64(q->qi_rtbhardlimit); -} - -/* - * Check the limits and timers of a dquot and start or reset timers - * if necessary. - * This gets called even when quota enforcement is OFF, which makes our - * life a little less complicated. (We just don't reject any quota - * reservations in that case, when enforcement is off). - * We also return 0 as the values of the timers in Q_GETQUOTA calls, when - * enforcement's off. - * In contrast, warnings are a little different in that they don't - * 'automatically' get started when limits get exceeded. They do - * get reset to zero, however, when we find the count to be under - * the soft limit (they are only ever set non-zero via userspace). - */ -void -xfs_qm_adjust_dqtimers( - xfs_mount_t *mp, - xfs_disk_dquot_t *d) -{ - ASSERT(d->d_id); - -#ifdef DEBUG - if (d->d_blk_hardlimit) - ASSERT(be64_to_cpu(d->d_blk_softlimit) <= - be64_to_cpu(d->d_blk_hardlimit)); - if (d->d_ino_hardlimit) - ASSERT(be64_to_cpu(d->d_ino_softlimit) <= - be64_to_cpu(d->d_ino_hardlimit)); - if (d->d_rtb_hardlimit) - ASSERT(be64_to_cpu(d->d_rtb_softlimit) <= - be64_to_cpu(d->d_rtb_hardlimit)); -#endif - - if (!d->d_btimer) { - if ((d->d_blk_softlimit && - (be64_to_cpu(d->d_bcount) >= - be64_to_cpu(d->d_blk_softlimit))) || - (d->d_blk_hardlimit && - (be64_to_cpu(d->d_bcount) >= - be64_to_cpu(d->d_blk_hardlimit)))) { - d->d_btimer = cpu_to_be32(get_seconds() + - mp->m_quotainfo->qi_btimelimit); - } else { - d->d_bwarns = 0; - } - } else { - if ((!d->d_blk_softlimit || - (be64_to_cpu(d->d_bcount) < - be64_to_cpu(d->d_blk_softlimit))) && - (!d->d_blk_hardlimit || - (be64_to_cpu(d->d_bcount) < - be64_to_cpu(d->d_blk_hardlimit)))) { - d->d_btimer = 0; - } - } - - if (!d->d_itimer) { - if ((d->d_ino_softlimit && - (be64_to_cpu(d->d_icount) >= - be64_to_cpu(d->d_ino_softlimit))) || - (d->d_ino_hardlimit && - (be64_to_cpu(d->d_icount) >= - be64_to_cpu(d->d_ino_hardlimit)))) { - d->d_itimer = cpu_to_be32(get_seconds() + - mp->m_quotainfo->qi_itimelimit); - } else { - d->d_iwarns = 0; - } - } else { - if ((!d->d_ino_softlimit || - (be64_to_cpu(d->d_icount) < - be64_to_cpu(d->d_ino_softlimit))) && - (!d->d_ino_hardlimit || - (be64_to_cpu(d->d_icount) < - be64_to_cpu(d->d_ino_hardlimit)))) { - d->d_itimer = 0; - } - } - - if (!d->d_rtbtimer) { - if ((d->d_rtb_softlimit && - (be64_to_cpu(d->d_rtbcount) >= - be64_to_cpu(d->d_rtb_softlimit))) || - (d->d_rtb_hardlimit && - (be64_to_cpu(d->d_rtbcount) >= - be64_to_cpu(d->d_rtb_hardlimit)))) { - d->d_rtbtimer = cpu_to_be32(get_seconds() + - mp->m_quotainfo->qi_rtbtimelimit); - } else { - d->d_rtbwarns = 0; - } - } else { - if ((!d->d_rtb_softlimit || - (be64_to_cpu(d->d_rtbcount) < - be64_to_cpu(d->d_rtb_softlimit))) && - (!d->d_rtb_hardlimit || - (be64_to_cpu(d->d_rtbcount) < - be64_to_cpu(d->d_rtb_hardlimit)))) { - d->d_rtbtimer = 0; - } - } -} - -/* - * initialize a buffer full of dquots and log the whole thing - */ -STATIC void -xfs_qm_init_dquot_blk( - xfs_trans_t *tp, - xfs_mount_t *mp, - xfs_dqid_t id, - uint type, - xfs_buf_t *bp) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - xfs_dqblk_t *d; - int curid, i; - - ASSERT(tp); - ASSERT(xfs_buf_islocked(bp)); - - d = bp->b_addr; - - /* - * ID of the first dquot in the block - id's are zero based. - */ - curid = id - (id % q->qi_dqperchunk); - ASSERT(curid >= 0); - memset(d, 0, BBTOB(q->qi_dqchunklen)); - for (i = 0; i < q->qi_dqperchunk; i++, d++, curid++) - xfs_qm_dqinit_core(curid, type, d); - xfs_trans_dquot_buf(tp, bp, - (type & XFS_DQ_USER ? XFS_BLF_UDQUOT_BUF : - ((type & XFS_DQ_PROJ) ? XFS_BLF_PDQUOT_BUF : - XFS_BLF_GDQUOT_BUF))); - xfs_trans_log_buf(tp, bp, 0, BBTOB(q->qi_dqchunklen) - 1); -} - - - -/* - * Allocate a block and fill it with dquots. - * This is called when the bmapi finds a hole. - */ -STATIC int -xfs_qm_dqalloc( - xfs_trans_t **tpp, - xfs_mount_t *mp, - xfs_dquot_t *dqp, - xfs_inode_t *quotip, - xfs_fileoff_t offset_fsb, - xfs_buf_t **O_bpp) -{ - xfs_fsblock_t firstblock; - xfs_bmap_free_t flist; - xfs_bmbt_irec_t map; - int nmaps, error, committed; - xfs_buf_t *bp; - xfs_trans_t *tp = *tpp; - - ASSERT(tp != NULL); - - trace_xfs_dqalloc(dqp); - - /* - * Initialize the bmap freelist prior to calling bmapi code. - */ - xfs_bmap_init(&flist, &firstblock); - xfs_ilock(quotip, XFS_ILOCK_EXCL); - /* - * Return if this type of quotas is turned off while we didn't - * have an inode lock - */ - if (XFS_IS_THIS_QUOTA_OFF(dqp)) { - xfs_iunlock(quotip, XFS_ILOCK_EXCL); - return (ESRCH); - } - - xfs_trans_ijoin_ref(tp, quotip, XFS_ILOCK_EXCL); - nmaps = 1; - if ((error = xfs_bmapi(tp, quotip, - offset_fsb, XFS_DQUOT_CLUSTER_SIZE_FSB, - XFS_BMAPI_METADATA | XFS_BMAPI_WRITE, - &firstblock, - XFS_QM_DQALLOC_SPACE_RES(mp), - &map, &nmaps, &flist))) { - goto error0; - } - ASSERT(map.br_blockcount == XFS_DQUOT_CLUSTER_SIZE_FSB); - ASSERT(nmaps == 1); - ASSERT((map.br_startblock != DELAYSTARTBLOCK) && - (map.br_startblock != HOLESTARTBLOCK)); - - /* - * Keep track of the blkno to save a lookup later - */ - dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); - - /* now we can just get the buffer (there's nothing to read yet) */ - bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, - dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, - 0); - if (!bp || (error = xfs_buf_geterror(bp))) - goto error1; - /* - * Make a chunk of dquots out of this buffer and log - * the entire thing. - */ - xfs_qm_init_dquot_blk(tp, mp, be32_to_cpu(dqp->q_core.d_id), - dqp->dq_flags & XFS_DQ_ALLTYPES, bp); - - /* - * xfs_bmap_finish() may commit the current transaction and - * start a second transaction if the freelist is not empty. - * - * Since we still want to modify this buffer, we need to - * ensure that the buffer is not released on commit of - * the first transaction and ensure the buffer is added to the - * second transaction. - * - * If there is only one transaction then don't stop the buffer - * from being released when it commits later on. - */ - - xfs_trans_bhold(tp, bp); - - if ((error = xfs_bmap_finish(tpp, &flist, &committed))) { - goto error1; - } - - if (committed) { - tp = *tpp; - xfs_trans_bjoin(tp, bp); - } else { - xfs_trans_bhold_release(tp, bp); - } - - *O_bpp = bp; - return 0; - - error1: - xfs_bmap_cancel(&flist); - error0: - xfs_iunlock(quotip, XFS_ILOCK_EXCL); - - return (error); -} - -/* - * Maps a dquot to the buffer containing its on-disk version. - * This returns a ptr to the buffer containing the on-disk dquot - * in the bpp param, and a ptr to the on-disk dquot within that buffer - */ -STATIC int -xfs_qm_dqtobp( - xfs_trans_t **tpp, - xfs_dquot_t *dqp, - xfs_disk_dquot_t **O_ddpp, - xfs_buf_t **O_bpp, - uint flags) -{ - xfs_bmbt_irec_t map; - int nmaps = 1, error; - xfs_buf_t *bp; - xfs_inode_t *quotip = XFS_DQ_TO_QIP(dqp); - xfs_mount_t *mp = dqp->q_mount; - xfs_disk_dquot_t *ddq; - xfs_dqid_t id = be32_to_cpu(dqp->q_core.d_id); - xfs_trans_t *tp = (tpp ? *tpp : NULL); - - dqp->q_fileoffset = (xfs_fileoff_t)id / mp->m_quotainfo->qi_dqperchunk; - - xfs_ilock(quotip, XFS_ILOCK_SHARED); - if (XFS_IS_THIS_QUOTA_OFF(dqp)) { - /* - * Return if this type of quotas is turned off while we - * didn't have the quota inode lock. - */ - xfs_iunlock(quotip, XFS_ILOCK_SHARED); - return ESRCH; - } - - /* - * Find the block map; no allocations yet - */ - error = xfs_bmapi(NULL, quotip, dqp->q_fileoffset, - XFS_DQUOT_CLUSTER_SIZE_FSB, XFS_BMAPI_METADATA, - NULL, 0, &map, &nmaps, NULL); - - xfs_iunlock(quotip, XFS_ILOCK_SHARED); - if (error) - return error; - - ASSERT(nmaps == 1); - ASSERT(map.br_blockcount == 1); - - /* - * Offset of dquot in the (fixed sized) dquot chunk. - */ - dqp->q_bufoffset = (id % mp->m_quotainfo->qi_dqperchunk) * - sizeof(xfs_dqblk_t); - - ASSERT(map.br_startblock != DELAYSTARTBLOCK); - if (map.br_startblock == HOLESTARTBLOCK) { - /* - * We don't allocate unless we're asked to - */ - if (!(flags & XFS_QMOPT_DQALLOC)) - return ENOENT; - - ASSERT(tp); - error = xfs_qm_dqalloc(tpp, mp, dqp, quotip, - dqp->q_fileoffset, &bp); - if (error) - return error; - tp = *tpp; - } else { - trace_xfs_dqtobp_read(dqp); - - /* - * store the blkno etc so that we don't have to do the - * mapping all the time - */ - dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); - - error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, - dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, - 0, &bp); - if (error || !bp) - return XFS_ERROR(error); - } - - ASSERT(xfs_buf_islocked(bp)); - - /* - * calculate the location of the dquot inside the buffer. - */ - ddq = bp->b_addr + dqp->q_bufoffset; - - /* - * A simple sanity check in case we got a corrupted dquot... - */ - error = xfs_qm_dqcheck(mp, ddq, id, dqp->dq_flags & XFS_DQ_ALLTYPES, - flags & (XFS_QMOPT_DQREPAIR|XFS_QMOPT_DOWARN), - "dqtobp"); - if (error) { - if (!(flags & XFS_QMOPT_DQREPAIR)) { - xfs_trans_brelse(tp, bp); - return XFS_ERROR(EIO); - } - } - - *O_bpp = bp; - *O_ddpp = ddq; - - return (0); -} - - -/* - * Read in the ondisk dquot using dqtobp() then copy it to an incore version, - * and release the buffer immediately. - * - */ -/* ARGSUSED */ -STATIC int -xfs_qm_dqread( - xfs_trans_t **tpp, - xfs_dqid_t id, - xfs_dquot_t *dqp, /* dquot to get filled in */ - uint flags) -{ - xfs_disk_dquot_t *ddqp; - xfs_buf_t *bp; - int error; - xfs_trans_t *tp; - - ASSERT(tpp); - - trace_xfs_dqread(dqp); - - /* - * get a pointer to the on-disk dquot and the buffer containing it - * dqp already knows its own type (GROUP/USER). - */ - if ((error = xfs_qm_dqtobp(tpp, dqp, &ddqp, &bp, flags))) { - return (error); - } - tp = *tpp; - - /* copy everything from disk dquot to the incore dquot */ - memcpy(&dqp->q_core, ddqp, sizeof(xfs_disk_dquot_t)); - ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); - xfs_qm_dquot_logitem_init(dqp); - - /* - * Reservation counters are defined as reservation plus current usage - * to avoid having to add every time. - */ - dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount); - dqp->q_res_icount = be64_to_cpu(ddqp->d_icount); - dqp->q_res_rtbcount = be64_to_cpu(ddqp->d_rtbcount); - - /* Mark the buf so that this will stay incore a little longer */ - XFS_BUF_SET_VTYPE_REF(bp, B_FS_DQUOT, XFS_DQUOT_REF); - - /* - * We got the buffer with a xfs_trans_read_buf() (in dqtobp()) - * So we need to release with xfs_trans_brelse(). - * The strategy here is identical to that of inodes; we lock - * the dquot in xfs_qm_dqget() before making it accessible to - * others. This is because dquots, like inodes, need a good level of - * concurrency, and we don't want to take locks on the entire buffers - * for dquot accesses. - * Note also that the dquot buffer may even be dirty at this point, if - * this particular dquot was repaired. We still aren't afraid to - * brelse it because we have the changes incore. - */ - ASSERT(xfs_buf_islocked(bp)); - xfs_trans_brelse(tp, bp); - - return (error); -} - - -/* - * allocate an incore dquot from the kernel heap, - * and fill its core with quota information kept on disk. - * If XFS_QMOPT_DQALLOC is set, it'll allocate a dquot on disk - * if it wasn't already allocated. - */ -STATIC int -xfs_qm_idtodq( - xfs_mount_t *mp, - xfs_dqid_t id, /* gid or uid, depending on type */ - uint type, /* UDQUOT or GDQUOT */ - uint flags, /* DQALLOC, DQREPAIR */ - xfs_dquot_t **O_dqpp)/* OUT : incore dquot, not locked */ -{ - xfs_dquot_t *dqp; - int error; - xfs_trans_t *tp; - int cancelflags=0; - - dqp = xfs_qm_dqinit(mp, id, type); - tp = NULL; - if (flags & XFS_QMOPT_DQALLOC) { - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC); - error = xfs_trans_reserve(tp, XFS_QM_DQALLOC_SPACE_RES(mp), - XFS_WRITE_LOG_RES(mp) + - BBTOB(mp->m_quotainfo->qi_dqchunklen) - 1 + - 128, - 0, - XFS_TRANS_PERM_LOG_RES, - XFS_WRITE_LOG_COUNT); - if (error) { - cancelflags = 0; - goto error0; - } - cancelflags = XFS_TRANS_RELEASE_LOG_RES; - } - - /* - * Read it from disk; xfs_dqread() takes care of - * all the necessary initialization of dquot's fields (locks, etc) - */ - if ((error = xfs_qm_dqread(&tp, id, dqp, flags))) { - /* - * This can happen if quotas got turned off (ESRCH), - * or if the dquot didn't exist on disk and we ask to - * allocate (ENOENT). - */ - trace_xfs_dqread_fail(dqp); - cancelflags |= XFS_TRANS_ABORT; - goto error0; - } - if (tp) { - if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) - goto error1; - } - - *O_dqpp = dqp; - return (0); - - error0: - ASSERT(error); - if (tp) - xfs_trans_cancel(tp, cancelflags); - error1: - xfs_qm_dqdestroy(dqp); - *O_dqpp = NULL; - return (error); -} - -/* - * Lookup a dquot in the incore dquot hashtable. We keep two separate - * hashtables for user and group dquots; and, these are global tables - * inside the XQM, not per-filesystem tables. - * The hash chain must be locked by caller, and it is left locked - * on return. Returning dquot is locked. - */ -STATIC int -xfs_qm_dqlookup( - xfs_mount_t *mp, - xfs_dqid_t id, - xfs_dqhash_t *qh, - xfs_dquot_t **O_dqpp) -{ - xfs_dquot_t *dqp; - uint flist_locked; - - ASSERT(mutex_is_locked(&qh->qh_lock)); - - flist_locked = B_FALSE; - - /* - * Traverse the hashchain looking for a match - */ - list_for_each_entry(dqp, &qh->qh_list, q_hashlist) { - /* - * We already have the hashlock. We don't need the - * dqlock to look at the id field of the dquot, since the - * id can't be modified without the hashlock anyway. - */ - if (be32_to_cpu(dqp->q_core.d_id) == id && dqp->q_mount == mp) { - trace_xfs_dqlookup_found(dqp); - - /* - * All in core dquots must be on the dqlist of mp - */ - ASSERT(!list_empty(&dqp->q_mplist)); - - xfs_dqlock(dqp); - if (dqp->q_nrefs == 0) { - ASSERT(!list_empty(&dqp->q_freelist)); - if (!mutex_trylock(&xfs_Gqm->qm_dqfrlist_lock)) { - trace_xfs_dqlookup_want(dqp); - - /* - * We may have raced with dqreclaim_one() - * (and lost). So, flag that we don't - * want the dquot to be reclaimed. - */ - dqp->dq_flags |= XFS_DQ_WANT; - xfs_dqunlock(dqp); - mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); - xfs_dqlock(dqp); - dqp->dq_flags &= ~(XFS_DQ_WANT); - } - flist_locked = B_TRUE; - } - - /* - * id couldn't have changed; we had the hashlock all - * along - */ - ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); - - if (flist_locked) { - if (dqp->q_nrefs != 0) { - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - flist_locked = B_FALSE; - } else { - /* take it off the freelist */ - trace_xfs_dqlookup_freelist(dqp); - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - } - } - - XFS_DQHOLD(dqp); - - if (flist_locked) - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - /* - * move the dquot to the front of the hashchain - */ - ASSERT(mutex_is_locked(&qh->qh_lock)); - list_move(&dqp->q_hashlist, &qh->qh_list); - trace_xfs_dqlookup_done(dqp); - *O_dqpp = dqp; - return 0; - } - } - - *O_dqpp = NULL; - ASSERT(mutex_is_locked(&qh->qh_lock)); - return (1); -} - -/* - * Given the file system, inode OR id, and type (UDQUOT/GDQUOT), return a - * a locked dquot, doing an allocation (if requested) as needed. - * When both an inode and an id are given, the inode's id takes precedence. - * That is, if the id changes while we don't hold the ilock inside this - * function, the new dquot is returned, not necessarily the one requested - * in the id argument. - */ -int -xfs_qm_dqget( - xfs_mount_t *mp, - xfs_inode_t *ip, /* locked inode (optional) */ - xfs_dqid_t id, /* uid/projid/gid depending on type */ - uint type, /* XFS_DQ_USER/XFS_DQ_PROJ/XFS_DQ_GROUP */ - uint flags, /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */ - xfs_dquot_t **O_dqpp) /* OUT : locked incore dquot */ -{ - xfs_dquot_t *dqp; - xfs_dqhash_t *h; - uint version; - int error; - - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - if ((! XFS_IS_UQUOTA_ON(mp) && type == XFS_DQ_USER) || - (! XFS_IS_PQUOTA_ON(mp) && type == XFS_DQ_PROJ) || - (! XFS_IS_GQUOTA_ON(mp) && type == XFS_DQ_GROUP)) { - return (ESRCH); - } - h = XFS_DQ_HASH(mp, id, type); - -#ifdef DEBUG - if (xfs_do_dqerror) { - if ((xfs_dqerror_target == mp->m_ddev_targp) && - (xfs_dqreq_num++ % xfs_dqerror_mod) == 0) { - xfs_debug(mp, "Returning error in dqget"); - return (EIO); - } - } -#endif - - again: - -#ifdef DEBUG - ASSERT(type == XFS_DQ_USER || - type == XFS_DQ_PROJ || - type == XFS_DQ_GROUP); - if (ip) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - if (type == XFS_DQ_USER) - ASSERT(ip->i_udquot == NULL); - else - ASSERT(ip->i_gdquot == NULL); - } -#endif - mutex_lock(&h->qh_lock); - - /* - * Look in the cache (hashtable). - * The chain is kept locked during lookup. - */ - if (xfs_qm_dqlookup(mp, id, h, O_dqpp) == 0) { - XQM_STATS_INC(xqmstats.xs_qm_dqcachehits); - /* - * The dquot was found, moved to the front of the chain, - * taken off the freelist if it was on it, and locked - * at this point. Just unlock the hashchain and return. - */ - ASSERT(*O_dqpp); - ASSERT(XFS_DQ_IS_LOCKED(*O_dqpp)); - mutex_unlock(&h->qh_lock); - trace_xfs_dqget_hit(*O_dqpp); - return (0); /* success */ - } - XQM_STATS_INC(xqmstats.xs_qm_dqcachemisses); - - /* - * Dquot cache miss. We don't want to keep the inode lock across - * a (potential) disk read. Also we don't want to deal with the lock - * ordering between quotainode and this inode. OTOH, dropping the inode - * lock here means dealing with a chown that can happen before - * we re-acquire the lock. - */ - if (ip) - xfs_iunlock(ip, XFS_ILOCK_EXCL); - /* - * Save the hashchain version stamp, and unlock the chain, so that - * we don't keep the lock across a disk read - */ - version = h->qh_version; - mutex_unlock(&h->qh_lock); - - /* - * Allocate the dquot on the kernel heap, and read the ondisk - * portion off the disk. Also, do all the necessary initialization - * This can return ENOENT if dquot didn't exist on disk and we didn't - * ask it to allocate; ESRCH if quotas got turned off suddenly. - */ - if ((error = xfs_qm_idtodq(mp, id, type, - flags & (XFS_QMOPT_DQALLOC|XFS_QMOPT_DQREPAIR| - XFS_QMOPT_DOWARN), - &dqp))) { - if (ip) - xfs_ilock(ip, XFS_ILOCK_EXCL); - return (error); - } - - /* - * See if this is mount code calling to look at the overall quota limits - * which are stored in the id == 0 user or group's dquot. - * Since we may not have done a quotacheck by this point, just return - * the dquot without attaching it to any hashtables, lists, etc, or even - * taking a reference. - * The caller must dqdestroy this once done. - */ - if (flags & XFS_QMOPT_DQSUSER) { - ASSERT(id == 0); - ASSERT(! ip); - goto dqret; - } - - /* - * Dquot lock comes after hashlock in the lock ordering - */ - if (ip) { - xfs_ilock(ip, XFS_ILOCK_EXCL); - - /* - * A dquot could be attached to this inode by now, since - * we had dropped the ilock. - */ - if (type == XFS_DQ_USER) { - if (!XFS_IS_UQUOTA_ON(mp)) { - /* inode stays locked on return */ - xfs_qm_dqdestroy(dqp); - return XFS_ERROR(ESRCH); - } - if (ip->i_udquot) { - xfs_qm_dqdestroy(dqp); - dqp = ip->i_udquot; - xfs_dqlock(dqp); - goto dqret; - } - } else { - if (!XFS_IS_OQUOTA_ON(mp)) { - /* inode stays locked on return */ - xfs_qm_dqdestroy(dqp); - return XFS_ERROR(ESRCH); - } - if (ip->i_gdquot) { - xfs_qm_dqdestroy(dqp); - dqp = ip->i_gdquot; - xfs_dqlock(dqp); - goto dqret; - } - } - } - - /* - * Hashlock comes after ilock in lock order - */ - mutex_lock(&h->qh_lock); - if (version != h->qh_version) { - xfs_dquot_t *tmpdqp; - /* - * Now, see if somebody else put the dquot in the - * hashtable before us. This can happen because we didn't - * keep the hashchain lock. We don't have to worry about - * lock order between the two dquots here since dqp isn't - * on any findable lists yet. - */ - if (xfs_qm_dqlookup(mp, id, h, &tmpdqp) == 0) { - /* - * Duplicate found. Just throw away the new dquot - * and start over. - */ - xfs_qm_dqput(tmpdqp); - mutex_unlock(&h->qh_lock); - xfs_qm_dqdestroy(dqp); - XQM_STATS_INC(xqmstats.xs_qm_dquot_dups); - goto again; - } - } - - /* - * Put the dquot at the beginning of the hash-chain and mp's list - * LOCK ORDER: hashlock, freelistlock, mplistlock, udqlock, gdqlock .. - */ - ASSERT(mutex_is_locked(&h->qh_lock)); - dqp->q_hash = h; - list_add(&dqp->q_hashlist, &h->qh_list); - h->qh_version++; - - /* - * Attach this dquot to this filesystem's list of all dquots, - * kept inside the mount structure in m_quotainfo field - */ - mutex_lock(&mp->m_quotainfo->qi_dqlist_lock); - - /* - * We return a locked dquot to the caller, with a reference taken - */ - xfs_dqlock(dqp); - dqp->q_nrefs = 1; - - list_add(&dqp->q_mplist, &mp->m_quotainfo->qi_dqlist); - mp->m_quotainfo->qi_dquots++; - mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); - mutex_unlock(&h->qh_lock); - dqret: - ASSERT((ip == NULL) || xfs_isilocked(ip, XFS_ILOCK_EXCL)); - trace_xfs_dqget_miss(dqp); - *O_dqpp = dqp; - return (0); -} - - -/* - * Release a reference to the dquot (decrement ref-count) - * and unlock it. If there is a group quota attached to this - * dquot, carefully release that too without tripping over - * deadlocks'n'stuff. - */ -void -xfs_qm_dqput( - xfs_dquot_t *dqp) -{ - xfs_dquot_t *gdqp; - - ASSERT(dqp->q_nrefs > 0); - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - - trace_xfs_dqput(dqp); - - if (dqp->q_nrefs != 1) { - dqp->q_nrefs--; - xfs_dqunlock(dqp); - return; - } - - /* - * drop the dqlock and acquire the freelist and dqlock - * in the right order; but try to get it out-of-order first - */ - if (!mutex_trylock(&xfs_Gqm->qm_dqfrlist_lock)) { - trace_xfs_dqput_wait(dqp); - xfs_dqunlock(dqp); - mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); - xfs_dqlock(dqp); - } - - while (1) { - gdqp = NULL; - - /* We can't depend on nrefs being == 1 here */ - if (--dqp->q_nrefs == 0) { - trace_xfs_dqput_free(dqp); - - list_add_tail(&dqp->q_freelist, &xfs_Gqm->qm_dqfrlist); - xfs_Gqm->qm_dqfrlist_cnt++; - - /* - * If we just added a udquot to the freelist, then - * we want to release the gdquot reference that - * it (probably) has. Otherwise it'll keep the - * gdquot from getting reclaimed. - */ - if ((gdqp = dqp->q_gdquot)) { - /* - * Avoid a recursive dqput call - */ - xfs_dqlock(gdqp); - dqp->q_gdquot = NULL; - } - } - xfs_dqunlock(dqp); - - /* - * If we had a group quota inside the user quota as a hint, - * release it now. - */ - if (! gdqp) - break; - dqp = gdqp; - } - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); -} - -/* - * Release a dquot. Flush it if dirty, then dqput() it. - * dquot must not be locked. - */ -void -xfs_qm_dqrele( - xfs_dquot_t *dqp) -{ - if (!dqp) - return; - - trace_xfs_dqrele(dqp); - - xfs_dqlock(dqp); - /* - * We don't care to flush it if the dquot is dirty here. - * That will create stutters that we want to avoid. - * Instead we do a delayed write when we try to reclaim - * a dirty dquot. Also xfs_sync will take part of the burden... - */ - xfs_qm_dqput(dqp); -} - -/* - * This is the dquot flushing I/O completion routine. It is called - * from interrupt level when the buffer containing the dquot is - * flushed to disk. It is responsible for removing the dquot logitem - * from the AIL if it has not been re-logged, and unlocking the dquot's - * flush lock. This behavior is very similar to that of inodes.. - */ -STATIC void -xfs_qm_dqflush_done( - struct xfs_buf *bp, - struct xfs_log_item *lip) -{ - xfs_dq_logitem_t *qip = (struct xfs_dq_logitem *)lip; - xfs_dquot_t *dqp = qip->qli_dquot; - struct xfs_ail *ailp = lip->li_ailp; - - /* - * We only want to pull the item from the AIL if its - * location in the log has not changed since we started the flush. - * Thus, we only bother if the dquot's lsn has - * not changed. First we check the lsn outside the lock - * since it's cheaper, and then we recheck while - * holding the lock before removing the dquot from the AIL. - */ - if ((lip->li_flags & XFS_LI_IN_AIL) && - lip->li_lsn == qip->qli_flush_lsn) { - - /* xfs_trans_ail_delete() drops the AIL lock. */ - spin_lock(&ailp->xa_lock); - if (lip->li_lsn == qip->qli_flush_lsn) - xfs_trans_ail_delete(ailp, lip); - else - spin_unlock(&ailp->xa_lock); - } - - /* - * Release the dq's flush lock since we're done with it. - */ - xfs_dqfunlock(dqp); -} - -/* - * Write a modified dquot to disk. - * The dquot must be locked and the flush lock too taken by caller. - * The flush lock will not be unlocked until the dquot reaches the disk, - * but the dquot is free to be unlocked and modified by the caller - * in the interim. Dquot is still locked on return. This behavior is - * identical to that of inodes. - */ -int -xfs_qm_dqflush( - xfs_dquot_t *dqp, - uint flags) -{ - struct xfs_mount *mp = dqp->q_mount; - struct xfs_buf *bp; - struct xfs_disk_dquot *ddqp; - int error; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - ASSERT(!completion_done(&dqp->q_flush)); - - trace_xfs_dqflush(dqp); - - /* - * If not dirty, or it's pinned and we are not supposed to block, nada. - */ - if (!XFS_DQ_IS_DIRTY(dqp) || - (!(flags & SYNC_WAIT) && atomic_read(&dqp->q_pincount) > 0)) { - xfs_dqfunlock(dqp); - return 0; - } - xfs_qm_dqunpin_wait(dqp); - - /* - * This may have been unpinned because the filesystem is shutting - * down forcibly. If that's the case we must not write this dquot - * to disk, because the log record didn't make it to disk! - */ - if (XFS_FORCED_SHUTDOWN(mp)) { - dqp->dq_flags &= ~XFS_DQ_DIRTY; - xfs_dqfunlock(dqp); - return XFS_ERROR(EIO); - } - - /* - * Get the buffer containing the on-disk dquot - */ - error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, 0, &bp); - if (error) { - ASSERT(error != ENOENT); - xfs_dqfunlock(dqp); - return error; - } - - /* - * Calculate the location of the dquot inside the buffer. - */ - ddqp = bp->b_addr + dqp->q_bufoffset; - - /* - * A simple sanity check in case we got a corrupted dquot.. - */ - error = xfs_qm_dqcheck(mp, &dqp->q_core, be32_to_cpu(ddqp->d_id), 0, - XFS_QMOPT_DOWARN, "dqflush (incore copy)"); - if (error) { - xfs_buf_relse(bp); - xfs_dqfunlock(dqp); - xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); - return XFS_ERROR(EIO); - } - - /* This is the only portion of data that needs to persist */ - memcpy(ddqp, &dqp->q_core, sizeof(xfs_disk_dquot_t)); - - /* - * Clear the dirty field and remember the flush lsn for later use. - */ - dqp->dq_flags &= ~XFS_DQ_DIRTY; - - xfs_trans_ail_copy_lsn(mp->m_ail, &dqp->q_logitem.qli_flush_lsn, - &dqp->q_logitem.qli_item.li_lsn); - - /* - * Attach an iodone routine so that we can remove this dquot from the - * AIL and release the flush lock once the dquot is synced to disk. - */ - xfs_buf_attach_iodone(bp, xfs_qm_dqflush_done, - &dqp->q_logitem.qli_item); - - /* - * If the buffer is pinned then push on the log so we won't - * get stuck waiting in the write for too long. - */ - if (xfs_buf_ispinned(bp)) { - trace_xfs_dqflush_force(dqp); - xfs_log_force(mp, 0); - } - - if (flags & SYNC_WAIT) - error = xfs_bwrite(mp, bp); - else - xfs_bdwrite(mp, bp); - - trace_xfs_dqflush_done(dqp); - - /* - * dqp is still locked, but caller is free to unlock it now. - */ - return error; - -} - -int -xfs_qm_dqlock_nowait( - xfs_dquot_t *dqp) -{ - return mutex_trylock(&dqp->q_qlock); -} - -void -xfs_dqlock( - xfs_dquot_t *dqp) -{ - mutex_lock(&dqp->q_qlock); -} - -void -xfs_dqunlock( - xfs_dquot_t *dqp) -{ - mutex_unlock(&(dqp->q_qlock)); - if (dqp->q_logitem.qli_dquot == dqp) { - /* Once was dqp->q_mount, but might just have been cleared */ - xfs_trans_unlocked_item(dqp->q_logitem.qli_item.li_ailp, - (xfs_log_item_t*)&(dqp->q_logitem)); - } -} - - -void -xfs_dqunlock_nonotify( - xfs_dquot_t *dqp) -{ - mutex_unlock(&(dqp->q_qlock)); -} - -/* - * Lock two xfs_dquot structures. - * - * To avoid deadlocks we always lock the quota structure with - * the lowerd id first. - */ -void -xfs_dqlock2( - xfs_dquot_t *d1, - xfs_dquot_t *d2) -{ - if (d1 && d2) { - ASSERT(d1 != d2); - if (be32_to_cpu(d1->q_core.d_id) > - be32_to_cpu(d2->q_core.d_id)) { - mutex_lock(&d2->q_qlock); - mutex_lock_nested(&d1->q_qlock, XFS_QLOCK_NESTED); - } else { - mutex_lock(&d1->q_qlock); - mutex_lock_nested(&d2->q_qlock, XFS_QLOCK_NESTED); - } - } else if (d1) { - mutex_lock(&d1->q_qlock); - } else if (d2) { - mutex_lock(&d2->q_qlock); - } -} - - -/* - * Take a dquot out of the mount's dqlist as well as the hashlist. - * This is called via unmount as well as quotaoff, and the purge - * will always succeed unless there are soft (temp) references - * outstanding. - * - * This returns 0 if it was purged, 1 if it wasn't. It's not an error code - * that we're returning! XXXsup - not cool. - */ -/* ARGSUSED */ -int -xfs_qm_dqpurge( - xfs_dquot_t *dqp) -{ - xfs_dqhash_t *qh = dqp->q_hash; - xfs_mount_t *mp = dqp->q_mount; - - ASSERT(mutex_is_locked(&mp->m_quotainfo->qi_dqlist_lock)); - ASSERT(mutex_is_locked(&dqp->q_hash->qh_lock)); - - xfs_dqlock(dqp); - /* - * We really can't afford to purge a dquot that is - * referenced, because these are hard refs. - * It shouldn't happen in general because we went thru _all_ inodes in - * dqrele_all_inodes before calling this and didn't let the mountlock go. - * However it is possible that we have dquots with temporary - * references that are not attached to an inode. e.g. see xfs_setattr(). - */ - if (dqp->q_nrefs != 0) { - xfs_dqunlock(dqp); - mutex_unlock(&dqp->q_hash->qh_lock); - return (1); - } - - ASSERT(!list_empty(&dqp->q_freelist)); - - /* - * If we're turning off quotas, we have to make sure that, for - * example, we don't delete quota disk blocks while dquots are - * in the process of getting written to those disk blocks. - * This dquot might well be on AIL, and we can't leave it there - * if we're turning off quotas. Basically, we need this flush - * lock, and are willing to block on it. - */ - if (!xfs_dqflock_nowait(dqp)) { - /* - * Block on the flush lock after nudging dquot buffer, - * if it is incore. - */ - xfs_qm_dqflock_pushbuf_wait(dqp); - } - - /* - * XXXIf we're turning this type of quotas off, we don't care - * about the dirty metadata sitting in this dquot. OTOH, if - * we're unmounting, we do care, so we flush it and wait. - */ - if (XFS_DQ_IS_DIRTY(dqp)) { - int error; - - /* dqflush unlocks dqflock */ - /* - * Given that dqpurge is a very rare occurrence, it is OK - * that we're holding the hashlist and mplist locks - * across the disk write. But, ... XXXsup - * - * We don't care about getting disk errors here. We need - * to purge this dquot anyway, so we go ahead regardless. - */ - error = xfs_qm_dqflush(dqp, SYNC_WAIT); - if (error) - xfs_warn(mp, "%s: dquot %p flush failed", - __func__, dqp); - xfs_dqflock(dqp); - } - ASSERT(atomic_read(&dqp->q_pincount) == 0); - ASSERT(XFS_FORCED_SHUTDOWN(mp) || - !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); - - list_del_init(&dqp->q_hashlist); - qh->qh_version++; - list_del_init(&dqp->q_mplist); - mp->m_quotainfo->qi_dqreclaims++; - mp->m_quotainfo->qi_dquots--; - /* - * XXX Move this to the front of the freelist, if we can get the - * freelist lock. - */ - ASSERT(!list_empty(&dqp->q_freelist)); - - dqp->q_mount = NULL; - dqp->q_hash = NULL; - dqp->dq_flags = XFS_DQ_INACTIVE; - memset(&dqp->q_core, 0, sizeof(dqp->q_core)); - xfs_dqfunlock(dqp); - xfs_dqunlock(dqp); - mutex_unlock(&qh->qh_lock); - return (0); -} - - -/* - * Give the buffer a little push if it is incore and - * wait on the flush lock. - */ -void -xfs_qm_dqflock_pushbuf_wait( - xfs_dquot_t *dqp) -{ - xfs_mount_t *mp = dqp->q_mount; - xfs_buf_t *bp; - - /* - * Check to see if the dquot has been flushed delayed - * write. If so, grab its buffer and send it - * out immediately. We'll be able to acquire - * the flush lock when the I/O completes. - */ - bp = xfs_incore(mp->m_ddev_targp, dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); - if (!bp) - goto out_lock; - - if (XFS_BUF_ISDELAYWRITE(bp)) { - if (xfs_buf_ispinned(bp)) - xfs_log_force(mp, 0); - xfs_buf_delwri_promote(bp); - wake_up_process(bp->b_target->bt_task); - } - xfs_buf_relse(bp); -out_lock: - xfs_dqflock(dqp); -} diff --git a/fs/xfs/quota/xfs_dquot.h b/fs/xfs/quota/xfs_dquot.h deleted file mode 100644 index 34b7e945dbfa..000000000000 --- a/fs/xfs/quota/xfs_dquot.h +++ /dev/null @@ -1,137 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_DQUOT_H__ -#define __XFS_DQUOT_H__ - -/* - * Dquots are structures that hold quota information about a user or a group, - * much like inodes are for files. In fact, dquots share many characteristics - * with inodes. However, dquots can also be a centralized resource, relative - * to a collection of inodes. In this respect, dquots share some characteristics - * of the superblock. - * XFS dquots exploit both those in its algorithms. They make every attempt - * to not be a bottleneck when quotas are on and have minimal impact, if any, - * when quotas are off. - */ - -/* - * The hash chain headers (hash buckets) - */ -typedef struct xfs_dqhash { - struct list_head qh_list; - struct mutex qh_lock; - uint qh_version; /* ever increasing version */ - uint qh_nelems; /* number of dquots on the list */ -} xfs_dqhash_t; - -struct xfs_mount; -struct xfs_trans; - -/* - * The incore dquot structure - */ -typedef struct xfs_dquot { - uint dq_flags; /* various flags (XFS_DQ_*) */ - struct list_head q_freelist; /* global free list of dquots */ - struct list_head q_mplist; /* mount's list of dquots */ - struct list_head q_hashlist; /* gloabl hash list of dquots */ - xfs_dqhash_t *q_hash; /* the hashchain header */ - struct xfs_mount*q_mount; /* filesystem this relates to */ - struct xfs_trans*q_transp; /* trans this belongs to currently */ - uint q_nrefs; /* # active refs from inodes */ - xfs_daddr_t q_blkno; /* blkno of dquot buffer */ - int q_bufoffset; /* off of dq in buffer (# dquots) */ - xfs_fileoff_t q_fileoffset; /* offset in quotas file */ - - struct xfs_dquot*q_gdquot; /* group dquot, hint only */ - xfs_disk_dquot_t q_core; /* actual usage & quotas */ - xfs_dq_logitem_t q_logitem; /* dquot log item */ - xfs_qcnt_t q_res_bcount; /* total regular nblks used+reserved */ - xfs_qcnt_t q_res_icount; /* total inos allocd+reserved */ - xfs_qcnt_t q_res_rtbcount;/* total realtime blks used+reserved */ - struct mutex q_qlock; /* quota lock */ - struct completion q_flush; /* flush completion queue */ - atomic_t q_pincount; /* dquot pin count */ - wait_queue_head_t q_pinwait; /* dquot pinning wait queue */ -} xfs_dquot_t; - -/* - * Lock hierarchy for q_qlock: - * XFS_QLOCK_NORMAL is the implicit default, - * XFS_QLOCK_NESTED is the dquot with the higher id in xfs_dqlock2 - */ -enum { - XFS_QLOCK_NORMAL = 0, - XFS_QLOCK_NESTED, -}; - -#define XFS_DQHOLD(dqp) ((dqp)->q_nrefs++) - -/* - * Manage the q_flush completion queue embedded in the dquot. This completion - * queue synchronizes processes attempting to flush the in-core dquot back to - * disk. - */ -static inline void xfs_dqflock(xfs_dquot_t *dqp) -{ - wait_for_completion(&dqp->q_flush); -} - -static inline int xfs_dqflock_nowait(xfs_dquot_t *dqp) -{ - return try_wait_for_completion(&dqp->q_flush); -} - -static inline void xfs_dqfunlock(xfs_dquot_t *dqp) -{ - complete(&dqp->q_flush); -} - -#define XFS_DQ_IS_LOCKED(dqp) (mutex_is_locked(&((dqp)->q_qlock))) -#define XFS_DQ_IS_DIRTY(dqp) ((dqp)->dq_flags & XFS_DQ_DIRTY) -#define XFS_QM_ISUDQ(dqp) ((dqp)->dq_flags & XFS_DQ_USER) -#define XFS_QM_ISPDQ(dqp) ((dqp)->dq_flags & XFS_DQ_PROJ) -#define XFS_QM_ISGDQ(dqp) ((dqp)->dq_flags & XFS_DQ_GROUP) -#define XFS_DQ_TO_QINF(dqp) ((dqp)->q_mount->m_quotainfo) -#define XFS_DQ_TO_QIP(dqp) (XFS_QM_ISUDQ(dqp) ? \ - XFS_DQ_TO_QINF(dqp)->qi_uquotaip : \ - XFS_DQ_TO_QINF(dqp)->qi_gquotaip) - -#define XFS_IS_THIS_QUOTA_OFF(d) (! (XFS_QM_ISUDQ(d) ? \ - (XFS_IS_UQUOTA_ON((d)->q_mount)) : \ - (XFS_IS_OQUOTA_ON((d)->q_mount)))) - -extern void xfs_qm_dqdestroy(xfs_dquot_t *); -extern int xfs_qm_dqflush(xfs_dquot_t *, uint); -extern int xfs_qm_dqpurge(xfs_dquot_t *); -extern void xfs_qm_dqunpin_wait(xfs_dquot_t *); -extern int xfs_qm_dqlock_nowait(xfs_dquot_t *); -extern void xfs_qm_dqflock_pushbuf_wait(xfs_dquot_t *dqp); -extern void xfs_qm_adjust_dqtimers(xfs_mount_t *, - xfs_disk_dquot_t *); -extern void xfs_qm_adjust_dqlimits(xfs_mount_t *, - xfs_disk_dquot_t *); -extern int xfs_qm_dqget(xfs_mount_t *, xfs_inode_t *, - xfs_dqid_t, uint, uint, xfs_dquot_t **); -extern void xfs_qm_dqput(xfs_dquot_t *); -extern void xfs_dqlock(xfs_dquot_t *); -extern void xfs_dqlock2(xfs_dquot_t *, xfs_dquot_t *); -extern void xfs_dqunlock(xfs_dquot_t *); -extern void xfs_dqunlock_nonotify(xfs_dquot_t *); - -#endif /* __XFS_DQUOT_H__ */ diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c deleted file mode 100644 index 9e0e2fa3f2c8..000000000000 --- a/fs/xfs/quota/xfs_dquot_item.c +++ /dev/null @@ -1,529 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_itable.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_trans_priv.h" -#include "xfs_qm.h" - -static inline struct xfs_dq_logitem *DQUOT_ITEM(struct xfs_log_item *lip) -{ - return container_of(lip, struct xfs_dq_logitem, qli_item); -} - -/* - * returns the number of iovecs needed to log the given dquot item. - */ -STATIC uint -xfs_qm_dquot_logitem_size( - struct xfs_log_item *lip) -{ - /* - * we need only two iovecs, one for the format, one for the real thing - */ - return 2; -} - -/* - * fills in the vector of log iovecs for the given dquot log item. - */ -STATIC void -xfs_qm_dquot_logitem_format( - struct xfs_log_item *lip, - struct xfs_log_iovec *logvec) -{ - struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); - - logvec->i_addr = &qlip->qli_format; - logvec->i_len = sizeof(xfs_dq_logformat_t); - logvec->i_type = XLOG_REG_TYPE_QFORMAT; - logvec++; - logvec->i_addr = &qlip->qli_dquot->q_core; - logvec->i_len = sizeof(xfs_disk_dquot_t); - logvec->i_type = XLOG_REG_TYPE_DQUOT; - - ASSERT(2 == lip->li_desc->lid_size); - qlip->qli_format.qlf_size = 2; - -} - -/* - * Increment the pin count of the given dquot. - */ -STATIC void -xfs_qm_dquot_logitem_pin( - struct xfs_log_item *lip) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - atomic_inc(&dqp->q_pincount); -} - -/* - * Decrement the pin count of the given dquot, and wake up - * anyone in xfs_dqwait_unpin() if the count goes to 0. The - * dquot must have been previously pinned with a call to - * xfs_qm_dquot_logitem_pin(). - */ -STATIC void -xfs_qm_dquot_logitem_unpin( - struct xfs_log_item *lip, - int remove) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - - ASSERT(atomic_read(&dqp->q_pincount) > 0); - if (atomic_dec_and_test(&dqp->q_pincount)) - wake_up(&dqp->q_pinwait); -} - -/* - * Given the logitem, this writes the corresponding dquot entry to disk - * asynchronously. This is called with the dquot entry securely locked; - * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot - * at the end. - */ -STATIC void -xfs_qm_dquot_logitem_push( - struct xfs_log_item *lip) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - int error; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - ASSERT(!completion_done(&dqp->q_flush)); - - /* - * Since we were able to lock the dquot's flush lock and - * we found it on the AIL, the dquot must be dirty. This - * is because the dquot is removed from the AIL while still - * holding the flush lock in xfs_dqflush_done(). Thus, if - * we found it in the AIL and were able to obtain the flush - * lock without sleeping, then there must not have been - * anyone in the process of flushing the dquot. - */ - error = xfs_qm_dqflush(dqp, 0); - if (error) - xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p", - __func__, error, dqp); - xfs_dqunlock(dqp); -} - -STATIC xfs_lsn_t -xfs_qm_dquot_logitem_committed( - struct xfs_log_item *lip, - xfs_lsn_t lsn) -{ - /* - * We always re-log the entire dquot when it becomes dirty, - * so, the latest copy _is_ the only one that matters. - */ - return lsn; -} - -/* - * This is called to wait for the given dquot to be unpinned. - * Most of these pin/unpin routines are plagiarized from inode code. - */ -void -xfs_qm_dqunpin_wait( - struct xfs_dquot *dqp) -{ - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - if (atomic_read(&dqp->q_pincount) == 0) - return; - - /* - * Give the log a push so we don't wait here too long. - */ - xfs_log_force(dqp->q_mount, 0); - wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); -} - -/* - * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that - * the dquot is locked by us, but the flush lock isn't. So, here we are - * going to see if the relevant dquot buffer is incore, waiting on DELWRI. - * If so, we want to push it out to help us take this item off the AIL as soon - * as possible. - * - * We must not be holding the AIL lock at this point. Calling incore() to - * search the buffer cache can be a time consuming thing, and AIL lock is a - * spinlock. - */ -STATIC void -xfs_qm_dquot_logitem_pushbuf( - struct xfs_log_item *lip) -{ - struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); - struct xfs_dquot *dqp = qlip->qli_dquot; - struct xfs_buf *bp; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - - /* - * If flushlock isn't locked anymore, chances are that the - * inode flush completed and the inode was taken off the AIL. - * So, just get out. - */ - if (completion_done(&dqp->q_flush) || - !(lip->li_flags & XFS_LI_IN_AIL)) { - xfs_dqunlock(dqp); - return; - } - - bp = xfs_incore(dqp->q_mount->m_ddev_targp, qlip->qli_format.qlf_blkno, - dqp->q_mount->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); - xfs_dqunlock(dqp); - if (!bp) - return; - if (XFS_BUF_ISDELAYWRITE(bp)) - xfs_buf_delwri_promote(bp); - xfs_buf_relse(bp); -} - -/* - * This is called to attempt to lock the dquot associated with this - * dquot log item. Don't sleep on the dquot lock or the flush lock. - * If the flush lock is already held, indicating that the dquot has - * been or is in the process of being flushed, then see if we can - * find the dquot's buffer in the buffer cache without sleeping. If - * we can and it is marked delayed write, then we want to send it out. - * We delay doing so until the push routine, though, to avoid sleeping - * in any device strategy routines. - */ -STATIC uint -xfs_qm_dquot_logitem_trylock( - struct xfs_log_item *lip) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - - if (atomic_read(&dqp->q_pincount) > 0) - return XFS_ITEM_PINNED; - - if (!xfs_qm_dqlock_nowait(dqp)) - return XFS_ITEM_LOCKED; - - if (!xfs_dqflock_nowait(dqp)) { - /* - * dquot has already been flushed to the backing buffer, - * leave it locked, pushbuf routine will unlock it. - */ - return XFS_ITEM_PUSHBUF; - } - - ASSERT(lip->li_flags & XFS_LI_IN_AIL); - return XFS_ITEM_SUCCESS; -} - -/* - * Unlock the dquot associated with the log item. - * Clear the fields of the dquot and dquot log item that - * are specific to the current transaction. If the - * hold flags is set, do not unlock the dquot. - */ -STATIC void -xfs_qm_dquot_logitem_unlock( - struct xfs_log_item *lip) -{ - struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - - /* - * Clear the transaction pointer in the dquot - */ - dqp->q_transp = NULL; - - /* - * dquots are never 'held' from getting unlocked at the end of - * a transaction. Their locking and unlocking is hidden inside the - * transaction layer, within trans_commit. Hence, no LI_HOLD flag - * for the logitem. - */ - xfs_dqunlock(dqp); -} - -/* - * this needs to stamp an lsn into the dquot, I think. - * rpc's that look at user dquot's would then have to - * push on the dependency recorded in the dquot - */ -STATIC void -xfs_qm_dquot_logitem_committing( - struct xfs_log_item *lip, - xfs_lsn_t lsn) -{ -} - -/* - * This is the ops vector for dquots - */ -static struct xfs_item_ops xfs_dquot_item_ops = { - .iop_size = xfs_qm_dquot_logitem_size, - .iop_format = xfs_qm_dquot_logitem_format, - .iop_pin = xfs_qm_dquot_logitem_pin, - .iop_unpin = xfs_qm_dquot_logitem_unpin, - .iop_trylock = xfs_qm_dquot_logitem_trylock, - .iop_unlock = xfs_qm_dquot_logitem_unlock, - .iop_committed = xfs_qm_dquot_logitem_committed, - .iop_push = xfs_qm_dquot_logitem_push, - .iop_pushbuf = xfs_qm_dquot_logitem_pushbuf, - .iop_committing = xfs_qm_dquot_logitem_committing -}; - -/* - * Initialize the dquot log item for a newly allocated dquot. - * The dquot isn't locked at this point, but it isn't on any of the lists - * either, so we don't care. - */ -void -xfs_qm_dquot_logitem_init( - struct xfs_dquot *dqp) -{ - struct xfs_dq_logitem *lp = &dqp->q_logitem; - - xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, - &xfs_dquot_item_ops); - lp->qli_dquot = dqp; - lp->qli_format.qlf_type = XFS_LI_DQUOT; - lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); - lp->qli_format.qlf_blkno = dqp->q_blkno; - lp->qli_format.qlf_len = 1; - /* - * This is just the offset of this dquot within its buffer - * (which is currently 1 FSB and probably won't change). - * Hence 32 bits for this offset should be just fine. - * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) - * here, and recompute it at recovery time. - */ - lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; -} - -/*------------------ QUOTAOFF LOG ITEMS -------------------*/ - -static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip) -{ - return container_of(lip, struct xfs_qoff_logitem, qql_item); -} - - -/* - * This returns the number of iovecs needed to log the given quotaoff item. - * We only need 1 iovec for an quotaoff item. It just logs the - * quotaoff_log_format structure. - */ -STATIC uint -xfs_qm_qoff_logitem_size( - struct xfs_log_item *lip) -{ - return 1; -} - -/* - * This is called to fill in the vector of log iovecs for the - * given quotaoff log item. We use only 1 iovec, and we point that - * at the quotaoff_log_format structure embedded in the quotaoff item. - * It is at this point that we assert that all of the extent - * slots in the quotaoff item have been filled. - */ -STATIC void -xfs_qm_qoff_logitem_format( - struct xfs_log_item *lip, - struct xfs_log_iovec *log_vector) -{ - struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip); - - ASSERT(qflip->qql_format.qf_type == XFS_LI_QUOTAOFF); - - log_vector->i_addr = &qflip->qql_format; - log_vector->i_len = sizeof(xfs_qoff_logitem_t); - log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; - qflip->qql_format.qf_size = 1; -} - -/* - * Pinning has no meaning for an quotaoff item, so just return. - */ -STATIC void -xfs_qm_qoff_logitem_pin( - struct xfs_log_item *lip) -{ -} - -/* - * Since pinning has no meaning for an quotaoff item, unpinning does - * not either. - */ -STATIC void -xfs_qm_qoff_logitem_unpin( - struct xfs_log_item *lip, - int remove) -{ -} - -/* - * Quotaoff items have no locking, so just return success. - */ -STATIC uint -xfs_qm_qoff_logitem_trylock( - struct xfs_log_item *lip) -{ - return XFS_ITEM_LOCKED; -} - -/* - * Quotaoff items have no locking or pushing, so return failure - * so that the caller doesn't bother with us. - */ -STATIC void -xfs_qm_qoff_logitem_unlock( - struct xfs_log_item *lip) -{ -} - -/* - * The quotaoff-start-item is logged only once and cannot be moved in the log, - * so simply return the lsn at which it's been logged. - */ -STATIC xfs_lsn_t -xfs_qm_qoff_logitem_committed( - struct xfs_log_item *lip, - xfs_lsn_t lsn) -{ - return lsn; -} - -/* - * There isn't much you can do to push on an quotaoff item. It is simply - * stuck waiting for the log to be flushed to disk. - */ -STATIC void -xfs_qm_qoff_logitem_push( - struct xfs_log_item *lip) -{ -} - - -STATIC xfs_lsn_t -xfs_qm_qoffend_logitem_committed( - struct xfs_log_item *lip, - xfs_lsn_t lsn) -{ - struct xfs_qoff_logitem *qfe = QOFF_ITEM(lip); - struct xfs_qoff_logitem *qfs = qfe->qql_start_lip; - struct xfs_ail *ailp = qfs->qql_item.li_ailp; - - /* - * Delete the qoff-start logitem from the AIL. - * xfs_trans_ail_delete() drops the AIL lock. - */ - spin_lock(&ailp->xa_lock); - xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); - - kmem_free(qfs); - kmem_free(qfe); - return (xfs_lsn_t)-1; -} - -/* - * XXX rcc - don't know quite what to do with this. I think we can - * just ignore it. The only time that isn't the case is if we allow - * the client to somehow see that quotas have been turned off in which - * we can't allow that to get back until the quotaoff hits the disk. - * So how would that happen? Also, do we need different routines for - * quotaoff start and quotaoff end? I suspect the answer is yes but - * to be sure, I need to look at the recovery code and see how quota off - * recovery is handled (do we roll forward or back or do something else). - * If we roll forwards or backwards, then we need two separate routines, - * one that does nothing and one that stamps in the lsn that matters - * (truly makes the quotaoff irrevocable). If we do something else, - * then maybe we don't need two. - */ -STATIC void -xfs_qm_qoff_logitem_committing( - struct xfs_log_item *lip, - xfs_lsn_t commit_lsn) -{ -} - -static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { - .iop_size = xfs_qm_qoff_logitem_size, - .iop_format = xfs_qm_qoff_logitem_format, - .iop_pin = xfs_qm_qoff_logitem_pin, - .iop_unpin = xfs_qm_qoff_logitem_unpin, - .iop_trylock = xfs_qm_qoff_logitem_trylock, - .iop_unlock = xfs_qm_qoff_logitem_unlock, - .iop_committed = xfs_qm_qoffend_logitem_committed, - .iop_push = xfs_qm_qoff_logitem_push, - .iop_committing = xfs_qm_qoff_logitem_committing -}; - -/* - * This is the ops vector shared by all quotaoff-start log items. - */ -static struct xfs_item_ops xfs_qm_qoff_logitem_ops = { - .iop_size = xfs_qm_qoff_logitem_size, - .iop_format = xfs_qm_qoff_logitem_format, - .iop_pin = xfs_qm_qoff_logitem_pin, - .iop_unpin = xfs_qm_qoff_logitem_unpin, - .iop_trylock = xfs_qm_qoff_logitem_trylock, - .iop_unlock = xfs_qm_qoff_logitem_unlock, - .iop_committed = xfs_qm_qoff_logitem_committed, - .iop_push = xfs_qm_qoff_logitem_push, - .iop_committing = xfs_qm_qoff_logitem_committing -}; - -/* - * Allocate and initialize an quotaoff item of the correct quota type(s). - */ -struct xfs_qoff_logitem * -xfs_qm_qoff_logitem_init( - struct xfs_mount *mp, - struct xfs_qoff_logitem *start, - uint flags) -{ - struct xfs_qoff_logitem *qf; - - qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), KM_SLEEP); - - xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? - &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); - qf->qql_item.li_mountp = mp; - qf->qql_format.qf_type = XFS_LI_QUOTAOFF; - qf->qql_format.qf_flags = flags; - qf->qql_start_lip = start; - return qf; -} diff --git a/fs/xfs/quota/xfs_dquot_item.h b/fs/xfs/quota/xfs_dquot_item.h deleted file mode 100644 index 5acae2ada70b..000000000000 --- a/fs/xfs/quota/xfs_dquot_item.h +++ /dev/null @@ -1,48 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_DQUOT_ITEM_H__ -#define __XFS_DQUOT_ITEM_H__ - -struct xfs_dquot; -struct xfs_trans; -struct xfs_mount; -struct xfs_qoff_logitem; - -typedef struct xfs_dq_logitem { - xfs_log_item_t qli_item; /* common portion */ - struct xfs_dquot *qli_dquot; /* dquot ptr */ - xfs_lsn_t qli_flush_lsn; /* lsn at last flush */ - xfs_dq_logformat_t qli_format; /* logged structure */ -} xfs_dq_logitem_t; - -typedef struct xfs_qoff_logitem { - xfs_log_item_t qql_item; /* common portion */ - struct xfs_qoff_logitem *qql_start_lip; /* qoff-start logitem, if any */ - xfs_qoff_logformat_t qql_format; /* logged structure */ -} xfs_qoff_logitem_t; - - -extern void xfs_qm_dquot_logitem_init(struct xfs_dquot *); -extern xfs_qoff_logitem_t *xfs_qm_qoff_logitem_init(struct xfs_mount *, - struct xfs_qoff_logitem *, uint); -extern xfs_qoff_logitem_t *xfs_trans_get_qoff_item(struct xfs_trans *, - struct xfs_qoff_logitem *, uint); -extern void xfs_trans_log_quotaoff_item(struct xfs_trans *, - struct xfs_qoff_logitem *); - -#endif /* __XFS_DQUOT_ITEM_H__ */ diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c deleted file mode 100644 index 9a0aa76facdf..000000000000 --- a/fs/xfs/quota/xfs_qm.c +++ /dev/null @@ -1,2416 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_ialloc.h" -#include "xfs_itable.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_bmap.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_trans_space.h" -#include "xfs_utils.h" -#include "xfs_qm.h" -#include "xfs_trace.h" - -/* - * The global quota manager. There is only one of these for the entire - * system, _not_ one per file system. XQM keeps track of the overall - * quota functionality, including maintaining the freelist and hash - * tables of dquots. - */ -struct mutex xfs_Gqm_lock; -struct xfs_qm *xfs_Gqm; -uint ndquot; - -kmem_zone_t *qm_dqzone; -kmem_zone_t *qm_dqtrxzone; - -STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); -STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); - -STATIC int xfs_qm_init_quotainos(xfs_mount_t *); -STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); -STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); - -static struct shrinker xfs_qm_shaker = { - .shrink = xfs_qm_shake, - .seeks = DEFAULT_SEEKS, -}; - -/* - * Initialize the XQM structure. - * Note that there is not one quota manager per file system. - */ -STATIC struct xfs_qm * -xfs_Gqm_init(void) -{ - xfs_dqhash_t *udqhash, *gdqhash; - xfs_qm_t *xqm; - size_t hsize; - uint i; - - /* - * Initialize the dquot hash tables. - */ - udqhash = kmem_zalloc_greedy(&hsize, - XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), - XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); - if (!udqhash) - goto out; - - gdqhash = kmem_zalloc_large(hsize); - if (!gdqhash) - goto out_free_udqhash; - - hsize /= sizeof(xfs_dqhash_t); - ndquot = hsize << 8; - - xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); - xqm->qm_dqhashmask = hsize - 1; - xqm->qm_usr_dqhtable = udqhash; - xqm->qm_grp_dqhtable = gdqhash; - ASSERT(xqm->qm_usr_dqhtable != NULL); - ASSERT(xqm->qm_grp_dqhtable != NULL); - - for (i = 0; i < hsize; i++) { - xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); - xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); - } - - /* - * Freelist of all dquots of all file systems - */ - INIT_LIST_HEAD(&xqm->qm_dqfrlist); - xqm->qm_dqfrlist_cnt = 0; - mutex_init(&xqm->qm_dqfrlist_lock); - - /* - * dquot zone. we register our own low-memory callback. - */ - if (!qm_dqzone) { - xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), - "xfs_dquots"); - qm_dqzone = xqm->qm_dqzone; - } else - xqm->qm_dqzone = qm_dqzone; - - register_shrinker(&xfs_qm_shaker); - - /* - * The t_dqinfo portion of transactions. - */ - if (!qm_dqtrxzone) { - xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), - "xfs_dqtrx"); - qm_dqtrxzone = xqm->qm_dqtrxzone; - } else - xqm->qm_dqtrxzone = qm_dqtrxzone; - - atomic_set(&xqm->qm_totaldquots, 0); - xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; - xqm->qm_nrefs = 0; - return xqm; - - out_free_udqhash: - kmem_free_large(udqhash); - out: - return NULL; -} - -/* - * Destroy the global quota manager when its reference count goes to zero. - */ -STATIC void -xfs_qm_destroy( - struct xfs_qm *xqm) -{ - struct xfs_dquot *dqp, *n; - int hsize, i; - - ASSERT(xqm != NULL); - ASSERT(xqm->qm_nrefs == 0); - unregister_shrinker(&xfs_qm_shaker); - hsize = xqm->qm_dqhashmask + 1; - for (i = 0; i < hsize; i++) { - xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); - xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); - } - kmem_free_large(xqm->qm_usr_dqhtable); - kmem_free_large(xqm->qm_grp_dqhtable); - xqm->qm_usr_dqhtable = NULL; - xqm->qm_grp_dqhtable = NULL; - xqm->qm_dqhashmask = 0; - - /* frlist cleanup */ - mutex_lock(&xqm->qm_dqfrlist_lock); - list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { - xfs_dqlock(dqp); - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - xfs_dqunlock(dqp); - xfs_qm_dqdestroy(dqp); - } - mutex_unlock(&xqm->qm_dqfrlist_lock); - mutex_destroy(&xqm->qm_dqfrlist_lock); - kmem_free(xqm); -} - -/* - * Called at mount time to let XQM know that another file system is - * starting quotas. This isn't crucial information as the individual mount - * structures are pretty independent, but it helps the XQM keep a - * global view of what's going on. - */ -/* ARGSUSED */ -STATIC int -xfs_qm_hold_quotafs_ref( - struct xfs_mount *mp) -{ - /* - * Need to lock the xfs_Gqm structure for things like this. For example, - * the structure could disappear between the entry to this routine and - * a HOLD operation if not locked. - */ - mutex_lock(&xfs_Gqm_lock); - - if (!xfs_Gqm) { - xfs_Gqm = xfs_Gqm_init(); - if (!xfs_Gqm) { - mutex_unlock(&xfs_Gqm_lock); - return ENOMEM; - } - } - - /* - * We can keep a list of all filesystems with quotas mounted for - * debugging and statistical purposes, but ... - * Just take a reference and get out. - */ - xfs_Gqm->qm_nrefs++; - mutex_unlock(&xfs_Gqm_lock); - - return 0; -} - - -/* - * Release the reference that a filesystem took at mount time, - * so that we know when we need to destroy the entire quota manager. - */ -/* ARGSUSED */ -STATIC void -xfs_qm_rele_quotafs_ref( - struct xfs_mount *mp) -{ - xfs_dquot_t *dqp, *n; - - ASSERT(xfs_Gqm); - ASSERT(xfs_Gqm->qm_nrefs > 0); - - /* - * Go thru the freelist and destroy all inactive dquots. - */ - mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); - - list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { - xfs_dqlock(dqp); - if (dqp->dq_flags & XFS_DQ_INACTIVE) { - ASSERT(dqp->q_mount == NULL); - ASSERT(! XFS_DQ_IS_DIRTY(dqp)); - ASSERT(list_empty(&dqp->q_hashlist)); - ASSERT(list_empty(&dqp->q_mplist)); - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - xfs_dqunlock(dqp); - xfs_qm_dqdestroy(dqp); - } else { - xfs_dqunlock(dqp); - } - } - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - - /* - * Destroy the entire XQM. If somebody mounts with quotaon, this'll - * be restarted. - */ - mutex_lock(&xfs_Gqm_lock); - if (--xfs_Gqm->qm_nrefs == 0) { - xfs_qm_destroy(xfs_Gqm); - xfs_Gqm = NULL; - } - mutex_unlock(&xfs_Gqm_lock); -} - -/* - * Just destroy the quotainfo structure. - */ -void -xfs_qm_unmount( - struct xfs_mount *mp) -{ - if (mp->m_quotainfo) { - xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); - xfs_qm_destroy_quotainfo(mp); - } -} - - -/* - * This is called from xfs_mountfs to start quotas and initialize all - * necessary data structures like quotainfo. This is also responsible for - * running a quotacheck as necessary. We are guaranteed that the superblock - * is consistently read in at this point. - * - * If we fail here, the mount will continue with quota turned off. We don't - * need to inidicate success or failure at all. - */ -void -xfs_qm_mount_quotas( - xfs_mount_t *mp) -{ - int error = 0; - uint sbf; - - /* - * If quotas on realtime volumes is not supported, we disable - * quotas immediately. - */ - if (mp->m_sb.sb_rextents) { - xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); - mp->m_qflags = 0; - goto write_changes; - } - - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - /* - * Allocate the quotainfo structure inside the mount struct, and - * create quotainode(s), and change/rev superblock if necessary. - */ - error = xfs_qm_init_quotainfo(mp); - if (error) { - /* - * We must turn off quotas. - */ - ASSERT(mp->m_quotainfo == NULL); - mp->m_qflags = 0; - goto write_changes; - } - /* - * If any of the quotas are not consistent, do a quotacheck. - */ - if (XFS_QM_NEED_QUOTACHECK(mp)) { - error = xfs_qm_quotacheck(mp); - if (error) { - /* Quotacheck failed and disabled quotas. */ - return; - } - } - /* - * If one type of quotas is off, then it will lose its - * quotachecked status, since we won't be doing accounting for - * that type anymore. - */ - if (!XFS_IS_UQUOTA_ON(mp)) - mp->m_qflags &= ~XFS_UQUOTA_CHKD; - if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) - mp->m_qflags &= ~XFS_OQUOTA_CHKD; - - write_changes: - /* - * We actually don't have to acquire the m_sb_lock at all. - * This can only be called from mount, and that's single threaded. XXX - */ - spin_lock(&mp->m_sb_lock); - sbf = mp->m_sb.sb_qflags; - mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; - spin_unlock(&mp->m_sb_lock); - - if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { - if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { - /* - * We could only have been turning quotas off. - * We aren't in very good shape actually because - * the incore structures are convinced that quotas are - * off, but the on disk superblock doesn't know that ! - */ - ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); - xfs_alert(mp, "%s: Superblock update failed!", - __func__); - } - } - - if (error) { - xfs_warn(mp, "Failed to initialize disk quotas."); - return; - } -} - -/* - * Called from the vfsops layer. - */ -void -xfs_qm_unmount_quotas( - xfs_mount_t *mp) -{ - /* - * Release the dquots that root inode, et al might be holding, - * before we flush quotas and blow away the quotainfo structure. - */ - ASSERT(mp->m_rootip); - xfs_qm_dqdetach(mp->m_rootip); - if (mp->m_rbmip) - xfs_qm_dqdetach(mp->m_rbmip); - if (mp->m_rsumip) - xfs_qm_dqdetach(mp->m_rsumip); - - /* - * Release the quota inodes. - */ - if (mp->m_quotainfo) { - if (mp->m_quotainfo->qi_uquotaip) { - IRELE(mp->m_quotainfo->qi_uquotaip); - mp->m_quotainfo->qi_uquotaip = NULL; - } - if (mp->m_quotainfo->qi_gquotaip) { - IRELE(mp->m_quotainfo->qi_gquotaip); - mp->m_quotainfo->qi_gquotaip = NULL; - } - } -} - -/* - * Flush all dquots of the given file system to disk. The dquots are - * _not_ purged from memory here, just their data written to disk. - */ -STATIC int -xfs_qm_dqflush_all( - struct xfs_mount *mp, - int sync_mode) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - int recl; - struct xfs_dquot *dqp; - int error; - - if (!q) - return 0; -again: - mutex_lock(&q->qi_dqlist_lock); - list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { - xfs_dqlock(dqp); - if (! XFS_DQ_IS_DIRTY(dqp)) { - xfs_dqunlock(dqp); - continue; - } - - /* XXX a sentinel would be better */ - recl = q->qi_dqreclaims; - if (!xfs_dqflock_nowait(dqp)) { - /* - * If we can't grab the flush lock then check - * to see if the dquot has been flushed delayed - * write. If so, grab its buffer and send it - * out immediately. We'll be able to acquire - * the flush lock when the I/O completes. - */ - xfs_qm_dqflock_pushbuf_wait(dqp); - } - /* - * Let go of the mplist lock. We don't want to hold it - * across a disk write. - */ - mutex_unlock(&q->qi_dqlist_lock); - error = xfs_qm_dqflush(dqp, sync_mode); - xfs_dqunlock(dqp); - if (error) - return error; - - mutex_lock(&q->qi_dqlist_lock); - if (recl != q->qi_dqreclaims) { - mutex_unlock(&q->qi_dqlist_lock); - /* XXX restart limit */ - goto again; - } - } - - mutex_unlock(&q->qi_dqlist_lock); - /* return ! busy */ - return 0; -} -/* - * Release the group dquot pointers the user dquots may be - * carrying around as a hint. mplist is locked on entry and exit. - */ -STATIC void -xfs_qm_detach_gdquots( - struct xfs_mount *mp) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - struct xfs_dquot *dqp, *gdqp; - int nrecl; - - again: - ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); - list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { - xfs_dqlock(dqp); - if ((gdqp = dqp->q_gdquot)) { - xfs_dqlock(gdqp); - dqp->q_gdquot = NULL; - } - xfs_dqunlock(dqp); - - if (gdqp) { - /* - * Can't hold the mplist lock across a dqput. - * XXXmust convert to marker based iterations here. - */ - nrecl = q->qi_dqreclaims; - mutex_unlock(&q->qi_dqlist_lock); - xfs_qm_dqput(gdqp); - - mutex_lock(&q->qi_dqlist_lock); - if (nrecl != q->qi_dqreclaims) - goto again; - } - } -} - -/* - * Go through all the incore dquots of this file system and take them - * off the mplist and hashlist, if the dquot type matches the dqtype - * parameter. This is used when turning off quota accounting for - * users and/or groups, as well as when the filesystem is unmounting. - */ -STATIC int -xfs_qm_dqpurge_int( - struct xfs_mount *mp, - uint flags) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - struct xfs_dquot *dqp, *n; - uint dqtype; - int nrecl; - int nmisses; - - if (!q) - return 0; - - dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; - dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; - dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; - - mutex_lock(&q->qi_dqlist_lock); - - /* - * In the first pass through all incore dquots of this filesystem, - * we release the group dquot pointers the user dquots may be - * carrying around as a hint. We need to do this irrespective of - * what's being turned off. - */ - xfs_qm_detach_gdquots(mp); - - again: - nmisses = 0; - ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); - /* - * Try to get rid of all of the unwanted dquots. The idea is to - * get them off mplist and hashlist, but leave them on freelist. - */ - list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { - /* - * It's OK to look at the type without taking dqlock here. - * We're holding the mplist lock here, and that's needed for - * a dqreclaim. - */ - if ((dqp->dq_flags & dqtype) == 0) - continue; - - if (!mutex_trylock(&dqp->q_hash->qh_lock)) { - nrecl = q->qi_dqreclaims; - mutex_unlock(&q->qi_dqlist_lock); - mutex_lock(&dqp->q_hash->qh_lock); - mutex_lock(&q->qi_dqlist_lock); - - /* - * XXXTheoretically, we can get into a very long - * ping pong game here. - * No one can be adding dquots to the mplist at - * this point, but somebody might be taking things off. - */ - if (nrecl != q->qi_dqreclaims) { - mutex_unlock(&dqp->q_hash->qh_lock); - goto again; - } - } - - /* - * Take the dquot off the mplist and hashlist. It may remain on - * freelist in INACTIVE state. - */ - nmisses += xfs_qm_dqpurge(dqp); - } - mutex_unlock(&q->qi_dqlist_lock); - return nmisses; -} - -int -xfs_qm_dqpurge_all( - xfs_mount_t *mp, - uint flags) -{ - int ndquots; - - /* - * Purge the dquot cache. - * None of the dquots should really be busy at this point. - */ - if (mp->m_quotainfo) { - while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { - delay(ndquots * 10); - } - } - return 0; -} - -STATIC int -xfs_qm_dqattach_one( - xfs_inode_t *ip, - xfs_dqid_t id, - uint type, - uint doalloc, - xfs_dquot_t *udqhint, /* hint */ - xfs_dquot_t **IO_idqpp) -{ - xfs_dquot_t *dqp; - int error; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - error = 0; - - /* - * See if we already have it in the inode itself. IO_idqpp is - * &i_udquot or &i_gdquot. This made the code look weird, but - * made the logic a lot simpler. - */ - dqp = *IO_idqpp; - if (dqp) { - trace_xfs_dqattach_found(dqp); - return 0; - } - - /* - * udqhint is the i_udquot field in inode, and is non-NULL only - * when the type arg is group/project. Its purpose is to save a - * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside - * the user dquot. - */ - if (udqhint) { - ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); - xfs_dqlock(udqhint); - - /* - * No need to take dqlock to look at the id. - * - * The ID can't change until it gets reclaimed, and it won't - * be reclaimed as long as we have a ref from inode and we - * hold the ilock. - */ - dqp = udqhint->q_gdquot; - if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { - xfs_dqlock(dqp); - XFS_DQHOLD(dqp); - ASSERT(*IO_idqpp == NULL); - *IO_idqpp = dqp; - - xfs_dqunlock(dqp); - xfs_dqunlock(udqhint); - return 0; - } - - /* - * We can't hold a dquot lock when we call the dqget code. - * We'll deadlock in no time, because of (not conforming to) - * lock ordering - the inodelock comes before any dquot lock, - * and we may drop and reacquire the ilock in xfs_qm_dqget(). - */ - xfs_dqunlock(udqhint); - } - - /* - * Find the dquot from somewhere. This bumps the - * reference count of dquot and returns it locked. - * This can return ENOENT if dquot didn't exist on - * disk and we didn't ask it to allocate; - * ESRCH if quotas got turned off suddenly. - */ - error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); - if (error) - return error; - - trace_xfs_dqattach_get(dqp); - - /* - * dqget may have dropped and re-acquired the ilock, but it guarantees - * that the dquot returned is the one that should go in the inode. - */ - *IO_idqpp = dqp; - xfs_dqunlock(dqp); - return 0; -} - - -/* - * Given a udquot and gdquot, attach a ptr to the group dquot in the - * udquot as a hint for future lookups. The idea sounds simple, but the - * execution isn't, because the udquot might have a group dquot attached - * already and getting rid of that gets us into lock ordering constraints. - * The process is complicated more by the fact that the dquots may or may not - * be locked on entry. - */ -STATIC void -xfs_qm_dqattach_grouphint( - xfs_dquot_t *udq, - xfs_dquot_t *gdq) -{ - xfs_dquot_t *tmp; - - xfs_dqlock(udq); - - if ((tmp = udq->q_gdquot)) { - if (tmp == gdq) { - xfs_dqunlock(udq); - return; - } - - udq->q_gdquot = NULL; - /* - * We can't keep any dqlocks when calling dqrele, - * because the freelist lock comes before dqlocks. - */ - xfs_dqunlock(udq); - /* - * we took a hard reference once upon a time in dqget, - * so give it back when the udquot no longer points at it - * dqput() does the unlocking of the dquot. - */ - xfs_qm_dqrele(tmp); - - xfs_dqlock(udq); - xfs_dqlock(gdq); - - } else { - ASSERT(XFS_DQ_IS_LOCKED(udq)); - xfs_dqlock(gdq); - } - - ASSERT(XFS_DQ_IS_LOCKED(udq)); - ASSERT(XFS_DQ_IS_LOCKED(gdq)); - /* - * Somebody could have attached a gdquot here, - * when we dropped the uqlock. If so, just do nothing. - */ - if (udq->q_gdquot == NULL) { - XFS_DQHOLD(gdq); - udq->q_gdquot = gdq; - } - - xfs_dqunlock(gdq); - xfs_dqunlock(udq); -} - - -/* - * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON - * into account. - * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. - * Inode may get unlocked and relocked in here, and the caller must deal with - * the consequences. - */ -int -xfs_qm_dqattach_locked( - xfs_inode_t *ip, - uint flags) -{ - xfs_mount_t *mp = ip->i_mount; - uint nquotas = 0; - int error = 0; - - if (!XFS_IS_QUOTA_RUNNING(mp) || - !XFS_IS_QUOTA_ON(mp) || - !XFS_NOT_DQATTACHED(mp, ip) || - ip->i_ino == mp->m_sb.sb_uquotino || - ip->i_ino == mp->m_sb.sb_gquotino) - return 0; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - - if (XFS_IS_UQUOTA_ON(mp)) { - error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, - flags & XFS_QMOPT_DQALLOC, - NULL, &ip->i_udquot); - if (error) - goto done; - nquotas++; - } - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - if (XFS_IS_OQUOTA_ON(mp)) { - error = XFS_IS_GQUOTA_ON(mp) ? - xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, - flags & XFS_QMOPT_DQALLOC, - ip->i_udquot, &ip->i_gdquot) : - xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, - flags & XFS_QMOPT_DQALLOC, - ip->i_udquot, &ip->i_gdquot); - /* - * Don't worry about the udquot that we may have - * attached above. It'll get detached, if not already. - */ - if (error) - goto done; - nquotas++; - } - - /* - * Attach this group quota to the user quota as a hint. - * This WON'T, in general, result in a thrash. - */ - if (nquotas == 2) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(ip->i_udquot); - ASSERT(ip->i_gdquot); - - /* - * We may or may not have the i_udquot locked at this point, - * but this check is OK since we don't depend on the i_gdquot to - * be accurate 100% all the time. It is just a hint, and this - * will succeed in general. - */ - if (ip->i_udquot->q_gdquot == ip->i_gdquot) - goto done; - /* - * Attach i_gdquot to the gdquot hint inside the i_udquot. - */ - xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); - } - - done: -#ifdef DEBUG - if (!error) { - if (XFS_IS_UQUOTA_ON(mp)) - ASSERT(ip->i_udquot); - if (XFS_IS_OQUOTA_ON(mp)) - ASSERT(ip->i_gdquot); - } - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); -#endif - return error; -} - -int -xfs_qm_dqattach( - struct xfs_inode *ip, - uint flags) -{ - int error; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_qm_dqattach_locked(ip, flags); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - return error; -} - -/* - * Release dquots (and their references) if any. - * The inode should be locked EXCL except when this's called by - * xfs_ireclaim. - */ -void -xfs_qm_dqdetach( - xfs_inode_t *ip) -{ - if (!(ip->i_udquot || ip->i_gdquot)) - return; - - trace_xfs_dquot_dqdetach(ip); - - ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); - ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); - if (ip->i_udquot) { - xfs_qm_dqrele(ip->i_udquot); - ip->i_udquot = NULL; - } - if (ip->i_gdquot) { - xfs_qm_dqrele(ip->i_gdquot); - ip->i_gdquot = NULL; - } -} - -int -xfs_qm_sync( - struct xfs_mount *mp, - int flags) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - int recl, restarts; - struct xfs_dquot *dqp; - int error; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - restarts = 0; - - again: - mutex_lock(&q->qi_dqlist_lock); - /* - * dqpurge_all() also takes the mplist lock and iterate thru all dquots - * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared - * when we have the mplist lock, we know that dquots will be consistent - * as long as we have it locked. - */ - if (!XFS_IS_QUOTA_ON(mp)) { - mutex_unlock(&q->qi_dqlist_lock); - return 0; - } - ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); - list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { - /* - * If this is vfs_sync calling, then skip the dquots that - * don't 'seem' to be dirty. ie. don't acquire dqlock. - * This is very similar to what xfs_sync does with inodes. - */ - if (flags & SYNC_TRYLOCK) { - if (!XFS_DQ_IS_DIRTY(dqp)) - continue; - if (!xfs_qm_dqlock_nowait(dqp)) - continue; - } else { - xfs_dqlock(dqp); - } - - /* - * Now, find out for sure if this dquot is dirty or not. - */ - if (! XFS_DQ_IS_DIRTY(dqp)) { - xfs_dqunlock(dqp); - continue; - } - - /* XXX a sentinel would be better */ - recl = q->qi_dqreclaims; - if (!xfs_dqflock_nowait(dqp)) { - if (flags & SYNC_TRYLOCK) { - xfs_dqunlock(dqp); - continue; - } - /* - * If we can't grab the flush lock then if the caller - * really wanted us to give this our best shot, so - * see if we can give a push to the buffer before we wait - * on the flush lock. At this point, we know that - * even though the dquot is being flushed, - * it has (new) dirty data. - */ - xfs_qm_dqflock_pushbuf_wait(dqp); - } - /* - * Let go of the mplist lock. We don't want to hold it - * across a disk write - */ - mutex_unlock(&q->qi_dqlist_lock); - error = xfs_qm_dqflush(dqp, flags); - xfs_dqunlock(dqp); - if (error && XFS_FORCED_SHUTDOWN(mp)) - return 0; /* Need to prevent umount failure */ - else if (error) - return error; - - mutex_lock(&q->qi_dqlist_lock); - if (recl != q->qi_dqreclaims) { - if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) - break; - - mutex_unlock(&q->qi_dqlist_lock); - goto again; - } - } - - mutex_unlock(&q->qi_dqlist_lock); - return 0; -} - -/* - * The hash chains and the mplist use the same xfs_dqhash structure as - * their list head, but we can take the mplist qh_lock and one of the - * hash qh_locks at the same time without any problem as they aren't - * related. - */ -static struct lock_class_key xfs_quota_mplist_class; - -/* - * This initializes all the quota information that's kept in the - * mount structure - */ -STATIC int -xfs_qm_init_quotainfo( - xfs_mount_t *mp) -{ - xfs_quotainfo_t *qinf; - int error; - xfs_dquot_t *dqp; - - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - /* - * Tell XQM that we exist as soon as possible. - */ - if ((error = xfs_qm_hold_quotafs_ref(mp))) { - return error; - } - - qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); - - /* - * See if quotainodes are setup, and if not, allocate them, - * and change the superblock accordingly. - */ - if ((error = xfs_qm_init_quotainos(mp))) { - kmem_free(qinf); - mp->m_quotainfo = NULL; - return error; - } - - INIT_LIST_HEAD(&qinf->qi_dqlist); - mutex_init(&qinf->qi_dqlist_lock); - lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); - - qinf->qi_dqreclaims = 0; - - /* mutex used to serialize quotaoffs */ - mutex_init(&qinf->qi_quotaofflock); - - /* Precalc some constants */ - qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); - ASSERT(qinf->qi_dqchunklen); - qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); - do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); - - mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); - - /* - * We try to get the limits from the superuser's limits fields. - * This is quite hacky, but it is standard quota practice. - * We look at the USR dquot with id == 0 first, but if user quotas - * are not enabled we goto the GRP dquot with id == 0. - * We don't really care to keep separate default limits for user - * and group quotas, at least not at this point. - */ - error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, - XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : - (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : - XFS_DQ_PROJ), - XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, - &dqp); - if (! error) { - xfs_disk_dquot_t *ddqp = &dqp->q_core; - - /* - * The warnings and timers set the grace period given to - * a user or group before he or she can not perform any - * more writing. If it is zero, a default is used. - */ - qinf->qi_btimelimit = ddqp->d_btimer ? - be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; - qinf->qi_itimelimit = ddqp->d_itimer ? - be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; - qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? - be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; - qinf->qi_bwarnlimit = ddqp->d_bwarns ? - be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; - qinf->qi_iwarnlimit = ddqp->d_iwarns ? - be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; - qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? - be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; - qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); - qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); - qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); - qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); - qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); - qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); - - /* - * We sent the XFS_QMOPT_DQSUSER flag to dqget because - * we don't want this dquot cached. We haven't done a - * quotacheck yet, and quotacheck doesn't like incore dquots. - */ - xfs_qm_dqdestroy(dqp); - } else { - qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; - qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; - qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; - qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; - qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; - qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; - } - - return 0; -} - - -/* - * Gets called when unmounting a filesystem or when all quotas get - * turned off. - * This purges the quota inodes, destroys locks and frees itself. - */ -void -xfs_qm_destroy_quotainfo( - xfs_mount_t *mp) -{ - xfs_quotainfo_t *qi; - - qi = mp->m_quotainfo; - ASSERT(qi != NULL); - ASSERT(xfs_Gqm != NULL); - - /* - * Release the reference that XQM kept, so that we know - * when the XQM structure should be freed. We cannot assume - * that xfs_Gqm is non-null after this point. - */ - xfs_qm_rele_quotafs_ref(mp); - - ASSERT(list_empty(&qi->qi_dqlist)); - mutex_destroy(&qi->qi_dqlist_lock); - - if (qi->qi_uquotaip) { - IRELE(qi->qi_uquotaip); - qi->qi_uquotaip = NULL; /* paranoia */ - } - if (qi->qi_gquotaip) { - IRELE(qi->qi_gquotaip); - qi->qi_gquotaip = NULL; - } - mutex_destroy(&qi->qi_quotaofflock); - kmem_free(qi); - mp->m_quotainfo = NULL; -} - - - -/* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ - -/* ARGSUSED */ -STATIC void -xfs_qm_list_init( - xfs_dqlist_t *list, - char *str, - int n) -{ - mutex_init(&list->qh_lock); - INIT_LIST_HEAD(&list->qh_list); - list->qh_version = 0; - list->qh_nelems = 0; -} - -STATIC void -xfs_qm_list_destroy( - xfs_dqlist_t *list) -{ - mutex_destroy(&(list->qh_lock)); -} - -/* - * Create an inode and return with a reference already taken, but unlocked - * This is how we create quota inodes - */ -STATIC int -xfs_qm_qino_alloc( - xfs_mount_t *mp, - xfs_inode_t **ip, - __int64_t sbfields, - uint flags) -{ - xfs_trans_t *tp; - int error; - int committed; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); - if ((error = xfs_trans_reserve(tp, - XFS_QM_QINOCREATE_SPACE_RES(mp), - XFS_CREATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_CREATE_LOG_COUNT))) { - xfs_trans_cancel(tp, 0); - return error; - } - - error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); - if (error) { - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | - XFS_TRANS_ABORT); - return error; - } - - /* - * Make the changes in the superblock, and log those too. - * sbfields arg may contain fields other than *QUOTINO; - * VERSIONNUM for example. - */ - spin_lock(&mp->m_sb_lock); - if (flags & XFS_QMOPT_SBVERSION) { - ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); - ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == - (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); - - xfs_sb_version_addquota(&mp->m_sb); - mp->m_sb.sb_uquotino = NULLFSINO; - mp->m_sb.sb_gquotino = NULLFSINO; - - /* qflags will get updated _after_ quotacheck */ - mp->m_sb.sb_qflags = 0; - } - if (flags & XFS_QMOPT_UQUOTA) - mp->m_sb.sb_uquotino = (*ip)->i_ino; - else - mp->m_sb.sb_gquotino = (*ip)->i_ino; - spin_unlock(&mp->m_sb_lock); - xfs_mod_sb(tp, sbfields); - - if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { - xfs_alert(mp, "%s failed (error %d)!", __func__, error); - return error; - } - return 0; -} - - -STATIC void -xfs_qm_reset_dqcounts( - xfs_mount_t *mp, - xfs_buf_t *bp, - xfs_dqid_t id, - uint type) -{ - xfs_disk_dquot_t *ddq; - int j; - - trace_xfs_reset_dqcounts(bp, _RET_IP_); - - /* - * Reset all counters and timers. They'll be - * started afresh by xfs_qm_quotacheck. - */ -#ifdef DEBUG - j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); - do_div(j, sizeof(xfs_dqblk_t)); - ASSERT(mp->m_quotainfo->qi_dqperchunk == j); -#endif - ddq = bp->b_addr; - for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { - /* - * Do a sanity check, and if needed, repair the dqblk. Don't - * output any warnings because it's perfectly possible to - * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. - */ - (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, - "xfs_quotacheck"); - ddq->d_bcount = 0; - ddq->d_icount = 0; - ddq->d_rtbcount = 0; - ddq->d_btimer = 0; - ddq->d_itimer = 0; - ddq->d_rtbtimer = 0; - ddq->d_bwarns = 0; - ddq->d_iwarns = 0; - ddq->d_rtbwarns = 0; - ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); - } -} - -STATIC int -xfs_qm_dqiter_bufs( - xfs_mount_t *mp, - xfs_dqid_t firstid, - xfs_fsblock_t bno, - xfs_filblks_t blkcnt, - uint flags) -{ - xfs_buf_t *bp; - int error; - int type; - - ASSERT(blkcnt > 0); - type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : - (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); - error = 0; - - /* - * Blkcnt arg can be a very big number, and might even be - * larger than the log itself. So, we have to break it up into - * manageable-sized transactions. - * Note that we don't start a permanent transaction here; we might - * not be able to get a log reservation for the whole thing up front, - * and we don't really care to either, because we just discard - * everything if we were to crash in the middle of this loop. - */ - while (blkcnt--) { - error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, - XFS_FSB_TO_DADDR(mp, bno), - mp->m_quotainfo->qi_dqchunklen, 0, &bp); - if (error) - break; - - xfs_qm_reset_dqcounts(mp, bp, firstid, type); - xfs_bdwrite(mp, bp); - /* - * goto the next block. - */ - bno++; - firstid += mp->m_quotainfo->qi_dqperchunk; - } - return error; -} - -/* - * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a - * caller supplied function for every chunk of dquots that we find. - */ -STATIC int -xfs_qm_dqiterate( - xfs_mount_t *mp, - xfs_inode_t *qip, - uint flags) -{ - xfs_bmbt_irec_t *map; - int i, nmaps; /* number of map entries */ - int error; /* return value */ - xfs_fileoff_t lblkno; - xfs_filblks_t maxlblkcnt; - xfs_dqid_t firstid; - xfs_fsblock_t rablkno; - xfs_filblks_t rablkcnt; - - error = 0; - /* - * This looks racy, but we can't keep an inode lock across a - * trans_reserve. But, this gets called during quotacheck, and that - * happens only at mount time which is single threaded. - */ - if (qip->i_d.di_nblocks == 0) - return 0; - - map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); - - lblkno = 0; - maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); - do { - nmaps = XFS_DQITER_MAP_SIZE; - /* - * We aren't changing the inode itself. Just changing - * some of its data. No new blocks are added here, and - * the inode is never added to the transaction. - */ - xfs_ilock(qip, XFS_ILOCK_SHARED); - error = xfs_bmapi(NULL, qip, lblkno, - maxlblkcnt - lblkno, - XFS_BMAPI_METADATA, - NULL, - 0, map, &nmaps, NULL); - xfs_iunlock(qip, XFS_ILOCK_SHARED); - if (error) - break; - - ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); - for (i = 0; i < nmaps; i++) { - ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); - ASSERT(map[i].br_blockcount); - - - lblkno += map[i].br_blockcount; - - if (map[i].br_startblock == HOLESTARTBLOCK) - continue; - - firstid = (xfs_dqid_t) map[i].br_startoff * - mp->m_quotainfo->qi_dqperchunk; - /* - * Do a read-ahead on the next extent. - */ - if ((i+1 < nmaps) && - (map[i+1].br_startblock != HOLESTARTBLOCK)) { - rablkcnt = map[i+1].br_blockcount; - rablkno = map[i+1].br_startblock; - while (rablkcnt--) { - xfs_buf_readahead(mp->m_ddev_targp, - XFS_FSB_TO_DADDR(mp, rablkno), - mp->m_quotainfo->qi_dqchunklen); - rablkno++; - } - } - /* - * Iterate thru all the blks in the extent and - * reset the counters of all the dquots inside them. - */ - if ((error = xfs_qm_dqiter_bufs(mp, - firstid, - map[i].br_startblock, - map[i].br_blockcount, - flags))) { - break; - } - } - - if (error) - break; - } while (nmaps > 0); - - kmem_free(map); - - return error; -} - -/* - * Called by dqusage_adjust in doing a quotacheck. - * - * Given the inode, and a dquot id this updates both the incore dqout as well - * as the buffer copy. This is so that once the quotacheck is done, we can - * just log all the buffers, as opposed to logging numerous updates to - * individual dquots. - */ -STATIC int -xfs_qm_quotacheck_dqadjust( - struct xfs_inode *ip, - xfs_dqid_t id, - uint type, - xfs_qcnt_t nblks, - xfs_qcnt_t rtblks) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_dquot *dqp; - int error; - - error = xfs_qm_dqget(mp, ip, id, type, - XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); - if (error) { - /* - * Shouldn't be able to turn off quotas here. - */ - ASSERT(error != ESRCH); - ASSERT(error != ENOENT); - return error; - } - - trace_xfs_dqadjust(dqp); - - /* - * Adjust the inode count and the block count to reflect this inode's - * resource usage. - */ - be64_add_cpu(&dqp->q_core.d_icount, 1); - dqp->q_res_icount++; - if (nblks) { - be64_add_cpu(&dqp->q_core.d_bcount, nblks); - dqp->q_res_bcount += nblks; - } - if (rtblks) { - be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); - dqp->q_res_rtbcount += rtblks; - } - - /* - * Set default limits, adjust timers (since we changed usages) - * - * There are no timers for the default values set in the root dquot. - */ - if (dqp->q_core.d_id) { - xfs_qm_adjust_dqlimits(mp, &dqp->q_core); - xfs_qm_adjust_dqtimers(mp, &dqp->q_core); - } - - dqp->dq_flags |= XFS_DQ_DIRTY; - xfs_qm_dqput(dqp); - return 0; -} - -STATIC int -xfs_qm_get_rtblks( - xfs_inode_t *ip, - xfs_qcnt_t *O_rtblks) -{ - xfs_filblks_t rtblks; /* total rt blks */ - xfs_extnum_t idx; /* extent record index */ - xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_extnum_t nextents; /* number of extent entries */ - int error; - - ASSERT(XFS_IS_REALTIME_INODE(ip)); - ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); - if (!(ifp->if_flags & XFS_IFEXTENTS)) { - if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) - return error; - } - rtblks = 0; - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - for (idx = 0; idx < nextents; idx++) - rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); - *O_rtblks = (xfs_qcnt_t)rtblks; - return 0; -} - -/* - * callback routine supplied to bulkstat(). Given an inumber, find its - * dquots and update them to account for resources taken by that inode. - */ -/* ARGSUSED */ -STATIC int -xfs_qm_dqusage_adjust( - xfs_mount_t *mp, /* mount point for filesystem */ - xfs_ino_t ino, /* inode number to get data for */ - void __user *buffer, /* not used */ - int ubsize, /* not used */ - int *ubused, /* not used */ - int *res) /* result code value */ -{ - xfs_inode_t *ip; - xfs_qcnt_t nblks, rtblks = 0; - int error; - - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - /* - * rootino must have its resources accounted for, not so with the quota - * inodes. - */ - if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { - *res = BULKSTAT_RV_NOTHING; - return XFS_ERROR(EINVAL); - } - - /* - * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget - * interface expects the inode to be exclusively locked because that's - * the case in all other instances. It's OK that we do this because - * quotacheck is done only at mount time. - */ - error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); - if (error) { - *res = BULKSTAT_RV_NOTHING; - return error; - } - - ASSERT(ip->i_delayed_blks == 0); - - if (XFS_IS_REALTIME_INODE(ip)) { - /* - * Walk thru the extent list and count the realtime blocks. - */ - error = xfs_qm_get_rtblks(ip, &rtblks); - if (error) - goto error0; - } - - nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; - - /* - * Add the (disk blocks and inode) resources occupied by this - * inode to its dquots. We do this adjustment in the incore dquot, - * and also copy the changes to its buffer. - * We don't care about putting these changes in a transaction - * envelope because if we crash in the middle of a 'quotacheck' - * we have to start from the beginning anyway. - * Once we're done, we'll log all the dquot bufs. - * - * The *QUOTA_ON checks below may look pretty racy, but quotachecks - * and quotaoffs don't race. (Quotachecks happen at mount time only). - */ - if (XFS_IS_UQUOTA_ON(mp)) { - error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, - XFS_DQ_USER, nblks, rtblks); - if (error) - goto error0; - } - - if (XFS_IS_GQUOTA_ON(mp)) { - error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, - XFS_DQ_GROUP, nblks, rtblks); - if (error) - goto error0; - } - - if (XFS_IS_PQUOTA_ON(mp)) { - error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), - XFS_DQ_PROJ, nblks, rtblks); - if (error) - goto error0; - } - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - IRELE(ip); - *res = BULKSTAT_RV_DIDONE; - return 0; - -error0: - xfs_iunlock(ip, XFS_ILOCK_EXCL); - IRELE(ip); - *res = BULKSTAT_RV_GIVEUP; - return error; -} - -/* - * Walk thru all the filesystem inodes and construct a consistent view - * of the disk quota world. If the quotacheck fails, disable quotas. - */ -int -xfs_qm_quotacheck( - xfs_mount_t *mp) -{ - int done, count, error; - xfs_ino_t lastino; - size_t structsz; - xfs_inode_t *uip, *gip; - uint flags; - - count = INT_MAX; - structsz = 1; - lastino = 0; - flags = 0; - - ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - /* - * There should be no cached dquots. The (simplistic) quotacheck - * algorithm doesn't like that. - */ - ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); - - xfs_notice(mp, "Quotacheck needed: Please wait."); - - /* - * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset - * their counters to zero. We need a clean slate. - * We don't log our changes till later. - */ - uip = mp->m_quotainfo->qi_uquotaip; - if (uip) { - error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); - if (error) - goto error_return; - flags |= XFS_UQUOTA_CHKD; - } - - gip = mp->m_quotainfo->qi_gquotaip; - if (gip) { - error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? - XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); - if (error) - goto error_return; - flags |= XFS_OQUOTA_CHKD; - } - - do { - /* - * Iterate thru all the inodes in the file system, - * adjusting the corresponding dquot counters in core. - */ - error = xfs_bulkstat(mp, &lastino, &count, - xfs_qm_dqusage_adjust, - structsz, NULL, &done); - if (error) - break; - - } while (!done); - - /* - * We've made all the changes that we need to make incore. - * Flush them down to disk buffers if everything was updated - * successfully. - */ - if (!error) - error = xfs_qm_dqflush_all(mp, 0); - - /* - * We can get this error if we couldn't do a dquot allocation inside - * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the - * dirty dquots that might be cached, we just want to get rid of them - * and turn quotaoff. The dquots won't be attached to any of the inodes - * at this point (because we intentionally didn't in dqget_noattach). - */ - if (error) { - xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); - goto error_return; - } - - /* - * We didn't log anything, because if we crashed, we'll have to - * start the quotacheck from scratch anyway. However, we must make - * sure that our dquot changes are secure before we put the - * quotacheck'd stamp on the superblock. So, here we do a synchronous - * flush. - */ - XFS_bflush(mp->m_ddev_targp); - - /* - * If one type of quotas is off, then it will lose its - * quotachecked status, since we won't be doing accounting for - * that type anymore. - */ - mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); - mp->m_qflags |= flags; - - error_return: - if (error) { - xfs_warn(mp, - "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", - error); - /* - * We must turn off quotas. - */ - ASSERT(mp->m_quotainfo != NULL); - ASSERT(xfs_Gqm != NULL); - xfs_qm_destroy_quotainfo(mp); - if (xfs_mount_reset_sbqflags(mp)) { - xfs_warn(mp, - "Quotacheck: Failed to reset quota flags."); - } - } else - xfs_notice(mp, "Quotacheck: Done."); - return (error); -} - -/* - * This is called after the superblock has been read in and we're ready to - * iget the quota inodes. - */ -STATIC int -xfs_qm_init_quotainos( - xfs_mount_t *mp) -{ - xfs_inode_t *uip, *gip; - int error; - __int64_t sbflags; - uint flags; - - ASSERT(mp->m_quotainfo); - uip = gip = NULL; - sbflags = 0; - flags = 0; - - /* - * Get the uquota and gquota inodes - */ - if (xfs_sb_version_hasquota(&mp->m_sb)) { - if (XFS_IS_UQUOTA_ON(mp) && - mp->m_sb.sb_uquotino != NULLFSINO) { - ASSERT(mp->m_sb.sb_uquotino > 0); - if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, - 0, 0, &uip))) - return XFS_ERROR(error); - } - if (XFS_IS_OQUOTA_ON(mp) && - mp->m_sb.sb_gquotino != NULLFSINO) { - ASSERT(mp->m_sb.sb_gquotino > 0); - if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, - 0, 0, &gip))) { - if (uip) - IRELE(uip); - return XFS_ERROR(error); - } - } - } else { - flags |= XFS_QMOPT_SBVERSION; - sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | - XFS_SB_GQUOTINO | XFS_SB_QFLAGS); - } - - /* - * Create the two inodes, if they don't exist already. The changes - * made above will get added to a transaction and logged in one of - * the qino_alloc calls below. If the device is readonly, - * temporarily switch to read-write to do this. - */ - if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { - if ((error = xfs_qm_qino_alloc(mp, &uip, - sbflags | XFS_SB_UQUOTINO, - flags | XFS_QMOPT_UQUOTA))) - return XFS_ERROR(error); - - flags &= ~XFS_QMOPT_SBVERSION; - } - if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { - flags |= (XFS_IS_GQUOTA_ON(mp) ? - XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); - error = xfs_qm_qino_alloc(mp, &gip, - sbflags | XFS_SB_GQUOTINO, flags); - if (error) { - if (uip) - IRELE(uip); - - return XFS_ERROR(error); - } - } - - mp->m_quotainfo->qi_uquotaip = uip; - mp->m_quotainfo->qi_gquotaip = gip; - - return 0; -} - - - -/* - * Just pop the least recently used dquot off the freelist and - * recycle it. The returned dquot is locked. - */ -STATIC xfs_dquot_t * -xfs_qm_dqreclaim_one(void) -{ - xfs_dquot_t *dqpout; - xfs_dquot_t *dqp; - int restarts; - int startagain; - - restarts = 0; - dqpout = NULL; - - /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ -again: - startagain = 0; - mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); - - list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { - struct xfs_mount *mp = dqp->q_mount; - xfs_dqlock(dqp); - - /* - * We are racing with dqlookup here. Naturally we don't - * want to reclaim a dquot that lookup wants. We release the - * freelist lock and start over, so that lookup will grab - * both the dquot and the freelistlock. - */ - if (dqp->dq_flags & XFS_DQ_WANT) { - ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); - - trace_xfs_dqreclaim_want(dqp); - XQM_STATS_INC(xqmstats.xs_qm_dqwants); - restarts++; - startagain = 1; - goto dqunlock; - } - - /* - * If the dquot is inactive, we are assured that it is - * not on the mplist or the hashlist, and that makes our - * life easier. - */ - if (dqp->dq_flags & XFS_DQ_INACTIVE) { - ASSERT(mp == NULL); - ASSERT(! XFS_DQ_IS_DIRTY(dqp)); - ASSERT(list_empty(&dqp->q_hashlist)); - ASSERT(list_empty(&dqp->q_mplist)); - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - dqpout = dqp; - XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); - goto dqunlock; - } - - ASSERT(dqp->q_hash); - ASSERT(!list_empty(&dqp->q_mplist)); - - /* - * Try to grab the flush lock. If this dquot is in the process - * of getting flushed to disk, we don't want to reclaim it. - */ - if (!xfs_dqflock_nowait(dqp)) - goto dqunlock; - - /* - * We have the flush lock so we know that this is not in the - * process of being flushed. So, if this is dirty, flush it - * DELWRI so that we don't get a freelist infested with - * dirty dquots. - */ - if (XFS_DQ_IS_DIRTY(dqp)) { - int error; - - trace_xfs_dqreclaim_dirty(dqp); - - /* - * We flush it delayed write, so don't bother - * releasing the freelist lock. - */ - error = xfs_qm_dqflush(dqp, 0); - if (error) { - xfs_warn(mp, "%s: dquot %p flush failed", - __func__, dqp); - } - goto dqunlock; - } - - /* - * We're trying to get the hashlock out of order. This races - * with dqlookup; so, we giveup and goto the next dquot if - * we couldn't get the hashlock. This way, we won't starve - * a dqlookup process that holds the hashlock that is - * waiting for the freelist lock. - */ - if (!mutex_trylock(&dqp->q_hash->qh_lock)) { - restarts++; - goto dqfunlock; - } - - /* - * This races with dquot allocation code as well as dqflush_all - * and reclaim code. So, if we failed to grab the mplist lock, - * giveup everything and start over. - */ - if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { - restarts++; - startagain = 1; - goto qhunlock; - } - - ASSERT(dqp->q_nrefs == 0); - list_del_init(&dqp->q_mplist); - mp->m_quotainfo->qi_dquots--; - mp->m_quotainfo->qi_dqreclaims++; - list_del_init(&dqp->q_hashlist); - dqp->q_hash->qh_version++; - list_del_init(&dqp->q_freelist); - xfs_Gqm->qm_dqfrlist_cnt--; - dqpout = dqp; - mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); -qhunlock: - mutex_unlock(&dqp->q_hash->qh_lock); -dqfunlock: - xfs_dqfunlock(dqp); -dqunlock: - xfs_dqunlock(dqp); - if (dqpout) - break; - if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) - break; - if (startagain) { - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - goto again; - } - } - mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); - return dqpout; -} - -/* - * Traverse the freelist of dquots and attempt to reclaim a maximum of - * 'howmany' dquots. This operation races with dqlookup(), and attempts to - * favor the lookup function ... - */ -STATIC int -xfs_qm_shake_freelist( - int howmany) -{ - int nreclaimed = 0; - xfs_dquot_t *dqp; - - if (howmany <= 0) - return 0; - - while (nreclaimed < howmany) { - dqp = xfs_qm_dqreclaim_one(); - if (!dqp) - return nreclaimed; - xfs_qm_dqdestroy(dqp); - nreclaimed++; - } - return nreclaimed; -} - -/* - * The kmem_shake interface is invoked when memory is running low. - */ -/* ARGSUSED */ -STATIC int -xfs_qm_shake( - struct shrinker *shrink, - struct shrink_control *sc) -{ - int ndqused, nfree, n; - gfp_t gfp_mask = sc->gfp_mask; - - if (!kmem_shake_allow(gfp_mask)) - return 0; - if (!xfs_Gqm) - return 0; - - nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ - /* incore dquots in all f/s's */ - ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; - - ASSERT(ndqused >= 0); - - if (nfree <= ndqused && nfree < ndquot) - return 0; - - ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ - n = nfree - ndqused - ndquot; /* # over target */ - - return xfs_qm_shake_freelist(MAX(nfree, n)); -} - - -/*------------------------------------------------------------------*/ - -/* - * Return a new incore dquot. Depending on the number of - * dquots in the system, we either allocate a new one on the kernel heap, - * or reclaim a free one. - * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed - * to reclaim an existing one from the freelist. - */ -boolean_t -xfs_qm_dqalloc_incore( - xfs_dquot_t **O_dqpp) -{ - xfs_dquot_t *dqp; - - /* - * Check against high water mark to see if we want to pop - * a nincompoop dquot off the freelist. - */ - if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { - /* - * Try to recycle a dquot from the freelist. - */ - if ((dqp = xfs_qm_dqreclaim_one())) { - XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); - /* - * Just zero the core here. The rest will get - * reinitialized by caller. XXX we shouldn't even - * do this zero ... - */ - memset(&dqp->q_core, 0, sizeof(dqp->q_core)); - *O_dqpp = dqp; - return B_FALSE; - } - XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); - } - - /* - * Allocate a brand new dquot on the kernel heap and return it - * to the caller to initialize. - */ - ASSERT(xfs_Gqm->qm_dqzone != NULL); - *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); - atomic_inc(&xfs_Gqm->qm_totaldquots); - - return B_TRUE; -} - - -/* - * Start a transaction and write the incore superblock changes to - * disk. flags parameter indicates which fields have changed. - */ -int -xfs_qm_write_sb_changes( - xfs_mount_t *mp, - __int64_t flags) -{ - xfs_trans_t *tp; - int error; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); - if ((error = xfs_trans_reserve(tp, 0, - mp->m_sb.sb_sectsize + 128, 0, - 0, - XFS_DEFAULT_LOG_COUNT))) { - xfs_trans_cancel(tp, 0); - return error; - } - - xfs_mod_sb(tp, flags); - error = xfs_trans_commit(tp, 0); - - return error; -} - - -/* --------------- utility functions for vnodeops ---------------- */ - - -/* - * Given an inode, a uid, gid and prid make sure that we have - * allocated relevant dquot(s) on disk, and that we won't exceed inode - * quotas by creating this file. - * This also attaches dquot(s) to the given inode after locking it, - * and returns the dquots corresponding to the uid and/or gid. - * - * in : inode (unlocked) - * out : udquot, gdquot with references taken and unlocked - */ -int -xfs_qm_vop_dqalloc( - struct xfs_inode *ip, - uid_t uid, - gid_t gid, - prid_t prid, - uint flags, - struct xfs_dquot **O_udqpp, - struct xfs_dquot **O_gdqpp) -{ - struct xfs_mount *mp = ip->i_mount; - struct xfs_dquot *uq, *gq; - int error; - uint lockflags; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - lockflags = XFS_ILOCK_EXCL; - xfs_ilock(ip, lockflags); - - if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) - gid = ip->i_d.di_gid; - - /* - * Attach the dquot(s) to this inode, doing a dquot allocation - * if necessary. The dquot(s) will not be locked. - */ - if (XFS_NOT_DQATTACHED(mp, ip)) { - error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); - if (error) { - xfs_iunlock(ip, lockflags); - return error; - } - } - - uq = gq = NULL; - if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { - if (ip->i_d.di_uid != uid) { - /* - * What we need is the dquot that has this uid, and - * if we send the inode to dqget, the uid of the inode - * takes priority over what's sent in the uid argument. - * We must unlock inode here before calling dqget if - * we're not sending the inode, because otherwise - * we'll deadlock by doing trans_reserve while - * holding ilock. - */ - xfs_iunlock(ip, lockflags); - if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, - XFS_DQ_USER, - XFS_QMOPT_DQALLOC | - XFS_QMOPT_DOWARN, - &uq))) { - ASSERT(error != ENOENT); - return error; - } - /* - * Get the ilock in the right order. - */ - xfs_dqunlock(uq); - lockflags = XFS_ILOCK_SHARED; - xfs_ilock(ip, lockflags); - } else { - /* - * Take an extra reference, because we'll return - * this to caller - */ - ASSERT(ip->i_udquot); - uq = ip->i_udquot; - xfs_dqlock(uq); - XFS_DQHOLD(uq); - xfs_dqunlock(uq); - } - } - if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { - if (ip->i_d.di_gid != gid) { - xfs_iunlock(ip, lockflags); - if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, - XFS_DQ_GROUP, - XFS_QMOPT_DQALLOC | - XFS_QMOPT_DOWARN, - &gq))) { - if (uq) - xfs_qm_dqrele(uq); - ASSERT(error != ENOENT); - return error; - } - xfs_dqunlock(gq); - lockflags = XFS_ILOCK_SHARED; - xfs_ilock(ip, lockflags); - } else { - ASSERT(ip->i_gdquot); - gq = ip->i_gdquot; - xfs_dqlock(gq); - XFS_DQHOLD(gq); - xfs_dqunlock(gq); - } - } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { - if (xfs_get_projid(ip) != prid) { - xfs_iunlock(ip, lockflags); - if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, - XFS_DQ_PROJ, - XFS_QMOPT_DQALLOC | - XFS_QMOPT_DOWARN, - &gq))) { - if (uq) - xfs_qm_dqrele(uq); - ASSERT(error != ENOENT); - return (error); - } - xfs_dqunlock(gq); - lockflags = XFS_ILOCK_SHARED; - xfs_ilock(ip, lockflags); - } else { - ASSERT(ip->i_gdquot); - gq = ip->i_gdquot; - xfs_dqlock(gq); - XFS_DQHOLD(gq); - xfs_dqunlock(gq); - } - } - if (uq) - trace_xfs_dquot_dqalloc(ip); - - xfs_iunlock(ip, lockflags); - if (O_udqpp) - *O_udqpp = uq; - else if (uq) - xfs_qm_dqrele(uq); - if (O_gdqpp) - *O_gdqpp = gq; - else if (gq) - xfs_qm_dqrele(gq); - return 0; -} - -/* - * Actually transfer ownership, and do dquot modifications. - * These were already reserved. - */ -xfs_dquot_t * -xfs_qm_vop_chown( - xfs_trans_t *tp, - xfs_inode_t *ip, - xfs_dquot_t **IO_olddq, - xfs_dquot_t *newdq) -{ - xfs_dquot_t *prevdq; - uint bfield = XFS_IS_REALTIME_INODE(ip) ? - XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; - - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); - - /* old dquot */ - prevdq = *IO_olddq; - ASSERT(prevdq); - ASSERT(prevdq != newdq); - - xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); - xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); - - /* the sparkling new dquot */ - xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); - xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); - - /* - * Take an extra reference, because the inode - * is going to keep this dquot pointer even - * after the trans_commit. - */ - xfs_dqlock(newdq); - XFS_DQHOLD(newdq); - xfs_dqunlock(newdq); - *IO_olddq = newdq; - - return prevdq; -} - -/* - * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). - */ -int -xfs_qm_vop_chown_reserve( - xfs_trans_t *tp, - xfs_inode_t *ip, - xfs_dquot_t *udqp, - xfs_dquot_t *gdqp, - uint flags) -{ - xfs_mount_t *mp = ip->i_mount; - uint delblks, blkflags, prjflags = 0; - xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; - int error; - - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - delblks = ip->i_delayed_blks; - delblksudq = delblksgdq = unresudq = unresgdq = NULL; - blkflags = XFS_IS_REALTIME_INODE(ip) ? - XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; - - if (XFS_IS_UQUOTA_ON(mp) && udqp && - ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { - delblksudq = udqp; - /* - * If there are delayed allocation blocks, then we have to - * unreserve those from the old dquot, and add them to the - * new dquot. - */ - if (delblks) { - ASSERT(ip->i_udquot); - unresudq = ip->i_udquot; - } - } - if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { - if (XFS_IS_PQUOTA_ON(ip->i_mount) && - xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) - prjflags = XFS_QMOPT_ENOSPC; - - if (prjflags || - (XFS_IS_GQUOTA_ON(ip->i_mount) && - ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { - delblksgdq = gdqp; - if (delblks) { - ASSERT(ip->i_gdquot); - unresgdq = ip->i_gdquot; - } - } - } - - if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, - delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, - flags | blkflags | prjflags))) - return (error); - - /* - * Do the delayed blks reservations/unreservations now. Since, these - * are done without the help of a transaction, if a reservation fails - * its previous reservations won't be automatically undone by trans - * code. So, we have to do it manually here. - */ - if (delblks) { - /* - * Do the reservations first. Unreservation can't fail. - */ - ASSERT(delblksudq || delblksgdq); - ASSERT(unresudq || unresgdq); - if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, - delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, - flags | blkflags | prjflags))) - return (error); - xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, - unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, - blkflags); - } - - return (0); -} - -int -xfs_qm_vop_rename_dqattach( - struct xfs_inode **i_tab) -{ - struct xfs_mount *mp = i_tab[0]->i_mount; - int i; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - for (i = 0; (i < 4 && i_tab[i]); i++) { - struct xfs_inode *ip = i_tab[i]; - int error; - - /* - * Watch out for duplicate entries in the table. - */ - if (i == 0 || ip != i_tab[i-1]) { - if (XFS_NOT_DQATTACHED(mp, ip)) { - error = xfs_qm_dqattach(ip, 0); - if (error) - return error; - } - } - } - return 0; -} - -void -xfs_qm_vop_create_dqattach( - struct xfs_trans *tp, - struct xfs_inode *ip, - struct xfs_dquot *udqp, - struct xfs_dquot *gdqp) -{ - struct xfs_mount *mp = tp->t_mountp; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(XFS_IS_QUOTA_RUNNING(mp)); - - if (udqp) { - xfs_dqlock(udqp); - XFS_DQHOLD(udqp); - xfs_dqunlock(udqp); - ASSERT(ip->i_udquot == NULL); - ip->i_udquot = udqp; - ASSERT(XFS_IS_UQUOTA_ON(mp)); - ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); - xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); - } - if (gdqp) { - xfs_dqlock(gdqp); - XFS_DQHOLD(gdqp); - xfs_dqunlock(gdqp); - ASSERT(ip->i_gdquot == NULL); - ip->i_gdquot = gdqp; - ASSERT(XFS_IS_OQUOTA_ON(mp)); - ASSERT((XFS_IS_GQUOTA_ON(mp) ? - ip->i_d.di_gid : xfs_get_projid(ip)) == - be32_to_cpu(gdqp->q_core.d_id)); - xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); - } -} - diff --git a/fs/xfs/quota/xfs_qm.h b/fs/xfs/quota/xfs_qm.h deleted file mode 100644 index 43b9abe1052c..000000000000 --- a/fs/xfs/quota/xfs_qm.h +++ /dev/null @@ -1,166 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_QM_H__ -#define __XFS_QM_H__ - -#include "xfs_dquot_item.h" -#include "xfs_dquot.h" -#include "xfs_quota_priv.h" -#include "xfs_qm_stats.h" - -struct xfs_qm; -struct xfs_inode; - -extern uint ndquot; -extern struct mutex xfs_Gqm_lock; -extern struct xfs_qm *xfs_Gqm; -extern kmem_zone_t *qm_dqzone; -extern kmem_zone_t *qm_dqtrxzone; - -/* - * Used in xfs_qm_sync called by xfs_sync to count the max times that it can - * iterate over the mountpt's dquot list in one call. - */ -#define XFS_QM_SYNC_MAX_RESTARTS 7 - -/* - * Ditto, for xfs_qm_dqreclaim_one. - */ -#define XFS_QM_RECLAIM_MAX_RESTARTS 4 - -/* - * Ideal ratio of free to in use dquots. Quota manager makes an attempt - * to keep this balance. - */ -#define XFS_QM_DQFREE_RATIO 2 - -/* - * Dquot hashtable constants/threshold values. - */ -#define XFS_QM_HASHSIZE_LOW (PAGE_SIZE / sizeof(xfs_dqhash_t)) -#define XFS_QM_HASHSIZE_HIGH ((PAGE_SIZE * 4) / sizeof(xfs_dqhash_t)) - -/* - * This defines the unit of allocation of dquots. - * Currently, it is just one file system block, and a 4K blk contains 30 - * (136 * 30 = 4080) dquots. It's probably not worth trying to make - * this more dynamic. - * XXXsup However, if this number is changed, we have to make sure that we don't - * implicitly assume that we do allocations in chunks of a single filesystem - * block in the dquot/xqm code. - */ -#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 - -typedef xfs_dqhash_t xfs_dqlist_t; - -/* - * Quota Manager (global) structure. Lives only in core. - */ -typedef struct xfs_qm { - xfs_dqlist_t *qm_usr_dqhtable;/* udquot hash table */ - xfs_dqlist_t *qm_grp_dqhtable;/* gdquot hash table */ - uint qm_dqhashmask; /* # buckets in dq hashtab - 1 */ - struct list_head qm_dqfrlist; /* freelist of dquots */ - struct mutex qm_dqfrlist_lock; - int qm_dqfrlist_cnt; - atomic_t qm_totaldquots; /* total incore dquots */ - uint qm_nrefs; /* file systems with quota on */ - int qm_dqfree_ratio;/* ratio of free to inuse dquots */ - kmem_zone_t *qm_dqzone; /* dquot mem-alloc zone */ - kmem_zone_t *qm_dqtrxzone; /* t_dqinfo of transactions */ -} xfs_qm_t; - -/* - * Various quota information for individual filesystems. - * The mount structure keeps a pointer to this. - */ -typedef struct xfs_quotainfo { - xfs_inode_t *qi_uquotaip; /* user quota inode */ - xfs_inode_t *qi_gquotaip; /* group quota inode */ - struct list_head qi_dqlist; /* all dquots in filesys */ - struct mutex qi_dqlist_lock; - int qi_dquots; - int qi_dqreclaims; /* a change here indicates - a removal in the dqlist */ - time_t qi_btimelimit; /* limit for blks timer */ - time_t qi_itimelimit; /* limit for inodes timer */ - time_t qi_rtbtimelimit;/* limit for rt blks timer */ - xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ - xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ - xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ - struct mutex qi_quotaofflock;/* to serialize quotaoff */ - xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ - uint qi_dqperchunk; /* # ondisk dqs in above chunk */ - xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ - xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ - xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ - xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ - xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ - xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ -} xfs_quotainfo_t; - - -extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long); -extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *, - xfs_dquot_t *, xfs_dquot_t *, long, long, uint); -extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *); -extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *); - -/* - * We keep the usr and grp dquots separately so that locking will be easier - * to do at commit time. All transactions that we know of at this point - * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. - */ -#define XFS_QM_TRANS_MAXDQS 2 -typedef struct xfs_dquot_acct { - xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS]; - xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS]; -} xfs_dquot_acct_t; - -/* - * Users are allowed to have a usage exceeding their softlimit for - * a period this long. - */ -#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ -#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ -#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ - -#define XFS_QM_BWARNLIMIT 5 -#define XFS_QM_IWARNLIMIT 5 -#define XFS_QM_RTBWARNLIMIT 5 - -extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); -extern int xfs_qm_quotacheck(xfs_mount_t *); -extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t); - -/* dquot stuff */ -extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **); -extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint); -extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint); - -/* quota ops */ -extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint); -extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint, - fs_disk_quota_t *); -extern int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint, - fs_disk_quota_t *); -extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *); -extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint); -extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint); - -#endif /* __XFS_QM_H__ */ diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c deleted file mode 100644 index a0a829addca9..000000000000 --- a/fs/xfs/quota/xfs_qm_bhv.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_qm.h" - - -STATIC void -xfs_fill_statvfs_from_dquot( - struct kstatfs *statp, - xfs_disk_dquot_t *dp) -{ - __uint64_t limit; - - limit = dp->d_blk_softlimit ? - be64_to_cpu(dp->d_blk_softlimit) : - be64_to_cpu(dp->d_blk_hardlimit); - if (limit && statp->f_blocks > limit) { - statp->f_blocks = limit; - statp->f_bfree = statp->f_bavail = - (statp->f_blocks > be64_to_cpu(dp->d_bcount)) ? - (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0; - } - - limit = dp->d_ino_softlimit ? - be64_to_cpu(dp->d_ino_softlimit) : - be64_to_cpu(dp->d_ino_hardlimit); - if (limit && statp->f_files > limit) { - statp->f_files = limit; - statp->f_ffree = - (statp->f_files > be64_to_cpu(dp->d_icount)) ? - (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0; - } -} - - -/* - * Directory tree accounting is implemented using project quotas, where - * the project identifier is inherited from parent directories. - * A statvfs (df, etc.) of a directory that is using project quota should - * return a statvfs of the project, not the entire filesystem. - * This makes such trees appear as if they are filesystems in themselves. - */ -void -xfs_qm_statvfs( - xfs_inode_t *ip, - struct kstatfs *statp) -{ - xfs_mount_t *mp = ip->i_mount; - xfs_dquot_t *dqp; - - if (!xfs_qm_dqget(mp, NULL, xfs_get_projid(ip), XFS_DQ_PROJ, 0, &dqp)) { - xfs_fill_statvfs_from_dquot(statp, &dqp->q_core); - xfs_qm_dqput(dqp); - } -} - -int -xfs_qm_newmount( - xfs_mount_t *mp, - uint *needquotamount, - uint *quotaflags) -{ - uint quotaondisk; - uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0; - - quotaondisk = xfs_sb_version_hasquota(&mp->m_sb) && - (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT); - - if (quotaondisk) { - uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT; - pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT; - gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT; - } - - /* - * If the device itself is read-only, we can't allow - * the user to change the state of quota on the mount - - * this would generate a transaction on the ro device, - * which would lead to an I/O error and shutdown - */ - - if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) || - (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) || - (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) || - (!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) || - (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) || - (!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) && - xfs_dev_is_read_only(mp, "changing quota state")) { - xfs_warn(mp, "please mount with%s%s%s%s.", - (!quotaondisk ? "out quota" : ""), - (uquotaondisk ? " usrquota" : ""), - (pquotaondisk ? " prjquota" : ""), - (gquotaondisk ? " grpquota" : "")); - return XFS_ERROR(EPERM); - } - - if (XFS_IS_QUOTA_ON(mp) || quotaondisk) { - /* - * Call mount_quotas at this point only if we won't have to do - * a quotacheck. - */ - if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) { - /* - * If an error occurred, qm_mount_quotas code - * has already disabled quotas. So, just finish - * mounting, and get on with the boring life - * without disk quotas. - */ - xfs_qm_mount_quotas(mp); - } else { - /* - * Clear the quota flags, but remember them. This - * is so that the quota code doesn't get invoked - * before we're ready. This can happen when an - * inode goes inactive and wants to free blocks, - * or via xfs_log_mount_finish. - */ - *needquotamount = B_TRUE; - *quotaflags = mp->m_qflags; - mp->m_qflags = 0; - } - } - - return 0; -} - -void __init -xfs_qm_init(void) -{ - printk(KERN_INFO "SGI XFS Quota Management subsystem\n"); - mutex_init(&xfs_Gqm_lock); - xfs_qm_init_procfs(); -} - -void __exit -xfs_qm_exit(void) -{ - xfs_qm_cleanup_procfs(); - if (qm_dqzone) - kmem_zone_destroy(qm_dqzone); - if (qm_dqtrxzone) - kmem_zone_destroy(qm_dqtrxzone); -} diff --git a/fs/xfs/quota/xfs_qm_stats.c b/fs/xfs/quota/xfs_qm_stats.c deleted file mode 100644 index 8671a0b32644..000000000000 --- a/fs/xfs/quota/xfs_qm_stats.c +++ /dev/null @@ -1,105 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_qm.h" - -struct xqmstats xqmstats; - -static int xqm_proc_show(struct seq_file *m, void *v) -{ - /* maximum; incore; ratio free to inuse; freelist */ - seq_printf(m, "%d\t%d\t%d\t%u\n", - ndquot, - xfs_Gqm? atomic_read(&xfs_Gqm->qm_totaldquots) : 0, - xfs_Gqm? xfs_Gqm->qm_dqfree_ratio : 0, - xfs_Gqm? xfs_Gqm->qm_dqfrlist_cnt : 0); - return 0; -} - -static int xqm_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, xqm_proc_show, NULL); -} - -static const struct file_operations xqm_proc_fops = { - .owner = THIS_MODULE, - .open = xqm_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int xqmstat_proc_show(struct seq_file *m, void *v) -{ - /* quota performance statistics */ - seq_printf(m, "qm %u %u %u %u %u %u %u %u\n", - xqmstats.xs_qm_dqreclaims, - xqmstats.xs_qm_dqreclaim_misses, - xqmstats.xs_qm_dquot_dups, - xqmstats.xs_qm_dqcachemisses, - xqmstats.xs_qm_dqcachehits, - xqmstats.xs_qm_dqwants, - xqmstats.xs_qm_dqshake_reclaims, - xqmstats.xs_qm_dqinact_reclaims); - return 0; -} - -static int xqmstat_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, xqmstat_proc_show, NULL); -} - -static const struct file_operations xqmstat_proc_fops = { - .owner = THIS_MODULE, - .open = xqmstat_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -void -xfs_qm_init_procfs(void) -{ - proc_create("fs/xfs/xqmstat", 0, NULL, &xqmstat_proc_fops); - proc_create("fs/xfs/xqm", 0, NULL, &xqm_proc_fops); -} - -void -xfs_qm_cleanup_procfs(void) -{ - remove_proc_entry("fs/xfs/xqm", NULL); - remove_proc_entry("fs/xfs/xqmstat", NULL); -} diff --git a/fs/xfs/quota/xfs_qm_stats.h b/fs/xfs/quota/xfs_qm_stats.h deleted file mode 100644 index 5b964fc0dc09..000000000000 --- a/fs/xfs/quota/xfs_qm_stats.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Copyright (c) 2002 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_QM_STATS_H__ -#define __XFS_QM_STATS_H__ - -#if defined(CONFIG_PROC_FS) && !defined(XFS_STATS_OFF) - -/* - * XQM global statistics - */ -struct xqmstats { - __uint32_t xs_qm_dqreclaims; - __uint32_t xs_qm_dqreclaim_misses; - __uint32_t xs_qm_dquot_dups; - __uint32_t xs_qm_dqcachemisses; - __uint32_t xs_qm_dqcachehits; - __uint32_t xs_qm_dqwants; - __uint32_t xs_qm_dqshake_reclaims; - __uint32_t xs_qm_dqinact_reclaims; -}; - -extern struct xqmstats xqmstats; - -# define XQM_STATS_INC(count) ( (count)++ ) - -extern void xfs_qm_init_procfs(void); -extern void xfs_qm_cleanup_procfs(void); - -#else - -# define XQM_STATS_INC(count) do { } while (0) - -static inline void xfs_qm_init_procfs(void) { }; -static inline void xfs_qm_cleanup_procfs(void) { }; - -#endif - -#endif /* __XFS_QM_STATS_H__ */ diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c deleted file mode 100644 index 609246f42e6c..000000000000 --- a/fs/xfs/quota/xfs_qm_syscalls.c +++ /dev/null @@ -1,906 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <linux/capability.h> - -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_qm.h" -#include "xfs_trace.h" - -STATIC int xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint); -STATIC int xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *, - uint); -STATIC uint xfs_qm_export_flags(uint); -STATIC uint xfs_qm_export_qtype_flags(uint); -STATIC void xfs_qm_export_dquot(xfs_mount_t *, xfs_disk_dquot_t *, - fs_disk_quota_t *); - - -/* - * Turn off quota accounting and/or enforcement for all udquots and/or - * gdquots. Called only at unmount time. - * - * This assumes that there are no dquots of this file system cached - * incore, and modifies the ondisk dquot directly. Therefore, for example, - * it is an error to call this twice, without purging the cache. - */ -int -xfs_qm_scall_quotaoff( - xfs_mount_t *mp, - uint flags) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - uint dqtype; - int error; - uint inactivate_flags; - xfs_qoff_logitem_t *qoffstart; - int nculprits; - - /* - * No file system can have quotas enabled on disk but not in core. - * Note that quota utilities (like quotaoff) _expect_ - * errno == EEXIST here. - */ - if ((mp->m_qflags & flags) == 0) - return XFS_ERROR(EEXIST); - error = 0; - - flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); - - /* - * We don't want to deal with two quotaoffs messing up each other, - * so we're going to serialize it. quotaoff isn't exactly a performance - * critical thing. - * If quotaoff, then we must be dealing with the root filesystem. - */ - ASSERT(q); - mutex_lock(&q->qi_quotaofflock); - - /* - * If we're just turning off quota enforcement, change mp and go. - */ - if ((flags & XFS_ALL_QUOTA_ACCT) == 0) { - mp->m_qflags &= ~(flags); - - spin_lock(&mp->m_sb_lock); - mp->m_sb.sb_qflags = mp->m_qflags; - spin_unlock(&mp->m_sb_lock); - mutex_unlock(&q->qi_quotaofflock); - - /* XXX what to do if error ? Revert back to old vals incore ? */ - error = xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS); - return (error); - } - - dqtype = 0; - inactivate_flags = 0; - /* - * If accounting is off, we must turn enforcement off, clear the - * quota 'CHKD' certificate to make it known that we have to - * do a quotacheck the next time this quota is turned on. - */ - if (flags & XFS_UQUOTA_ACCT) { - dqtype |= XFS_QMOPT_UQUOTA; - flags |= (XFS_UQUOTA_CHKD | XFS_UQUOTA_ENFD); - inactivate_flags |= XFS_UQUOTA_ACTIVE; - } - if (flags & XFS_GQUOTA_ACCT) { - dqtype |= XFS_QMOPT_GQUOTA; - flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD); - inactivate_flags |= XFS_GQUOTA_ACTIVE; - } else if (flags & XFS_PQUOTA_ACCT) { - dqtype |= XFS_QMOPT_PQUOTA; - flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD); - inactivate_flags |= XFS_PQUOTA_ACTIVE; - } - - /* - * Nothing to do? Don't complain. This happens when we're just - * turning off quota enforcement. - */ - if ((mp->m_qflags & flags) == 0) - goto out_unlock; - - /* - * Write the LI_QUOTAOFF log record, and do SB changes atomically, - * and synchronously. If we fail to write, we should abort the - * operation as it cannot be recovered safely if we crash. - */ - error = xfs_qm_log_quotaoff(mp, &qoffstart, flags); - if (error) - goto out_unlock; - - /* - * Next we clear the XFS_MOUNT_*DQ_ACTIVE bit(s) in the mount struct - * to take care of the race between dqget and quotaoff. We don't take - * any special locks to reset these bits. All processes need to check - * these bits *after* taking inode lock(s) to see if the particular - * quota type is in the process of being turned off. If *ACTIVE, it is - * guaranteed that all dquot structures and all quotainode ptrs will all - * stay valid as long as that inode is kept locked. - * - * There is no turning back after this. - */ - mp->m_qflags &= ~inactivate_flags; - - /* - * Give back all the dquot reference(s) held by inodes. - * Here we go thru every single incore inode in this file system, and - * do a dqrele on the i_udquot/i_gdquot that it may have. - * Essentially, as long as somebody has an inode locked, this guarantees - * that quotas will not be turned off. This is handy because in a - * transaction once we lock the inode(s) and check for quotaon, we can - * depend on the quota inodes (and other things) being valid as long as - * we keep the lock(s). - */ - xfs_qm_dqrele_all_inodes(mp, flags); - - /* - * Next we make the changes in the quota flag in the mount struct. - * This isn't protected by a particular lock directly, because we - * don't want to take a mrlock every time we depend on quotas being on. - */ - mp->m_qflags &= ~(flags); - - /* - * Go through all the dquots of this file system and purge them, - * according to what was turned off. We may not be able to get rid - * of all dquots, because dquots can have temporary references that - * are not attached to inodes. eg. xfs_setattr, xfs_create. - * So, if we couldn't purge all the dquots from the filesystem, - * we can't get rid of the incore data structures. - */ - while ((nculprits = xfs_qm_dqpurge_all(mp, dqtype))) - delay(10 * nculprits); - - /* - * Transactions that had started before ACTIVE state bit was cleared - * could have logged many dquots, so they'd have higher LSNs than - * the first QUOTAOFF log record does. If we happen to crash when - * the tail of the log has gone past the QUOTAOFF record, but - * before the last dquot modification, those dquots __will__ - * recover, and that's not good. - * - * So, we have QUOTAOFF start and end logitems; the start - * logitem won't get overwritten until the end logitem appears... - */ - error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags); - if (error) { - /* We're screwed now. Shutdown is the only option. */ - xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); - goto out_unlock; - } - - /* - * If quotas is completely disabled, close shop. - */ - if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) || - ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) { - mutex_unlock(&q->qi_quotaofflock); - xfs_qm_destroy_quotainfo(mp); - return (0); - } - - /* - * Release our quotainode references if we don't need them anymore. - */ - if ((dqtype & XFS_QMOPT_UQUOTA) && q->qi_uquotaip) { - IRELE(q->qi_uquotaip); - q->qi_uquotaip = NULL; - } - if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && q->qi_gquotaip) { - IRELE(q->qi_gquotaip); - q->qi_gquotaip = NULL; - } - -out_unlock: - mutex_unlock(&q->qi_quotaofflock); - return error; -} - -STATIC int -xfs_qm_scall_trunc_qfile( - struct xfs_mount *mp, - xfs_ino_t ino) -{ - struct xfs_inode *ip; - struct xfs_trans *tp; - int error; - - if (ino == NULLFSINO) - return 0; - - error = xfs_iget(mp, NULL, ino, 0, 0, &ip); - if (error) - return error; - - xfs_ilock(ip, XFS_IOLOCK_EXCL); - - tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE); - error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, - XFS_TRANS_PERM_LOG_RES, - XFS_ITRUNCATE_LOG_COUNT); - if (error) { - xfs_trans_cancel(tp, 0); - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - goto out_put; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip); - - error = xfs_itruncate_data(&tp, ip, 0); - if (error) { - xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | - XFS_TRANS_ABORT); - goto out_unlock; - } - - xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - -out_unlock: - xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL); -out_put: - IRELE(ip); - return error; -} - -int -xfs_qm_scall_trunc_qfiles( - xfs_mount_t *mp, - uint flags) -{ - int error = 0, error2 = 0; - - if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) { - xfs_debug(mp, "%s: flags=%x m_qflags=%x\n", - __func__, flags, mp->m_qflags); - return XFS_ERROR(EINVAL); - } - - if (flags & XFS_DQ_USER) - error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino); - if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) - error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino); - - return error ? error : error2; -} - -/* - * Switch on (a given) quota enforcement for a filesystem. This takes - * effect immediately. - * (Switching on quota accounting must be done at mount time.) - */ -int -xfs_qm_scall_quotaon( - xfs_mount_t *mp, - uint flags) -{ - int error; - uint qf; - __int64_t sbflags; - - flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD); - /* - * Switching on quota accounting must be done at mount time. - */ - flags &= ~(XFS_ALL_QUOTA_ACCT); - - sbflags = 0; - - if (flags == 0) { - xfs_debug(mp, "%s: zero flags, m_qflags=%x\n", - __func__, mp->m_qflags); - return XFS_ERROR(EINVAL); - } - - /* No fs can turn on quotas with a delayed effect */ - ASSERT((flags & XFS_ALL_QUOTA_ACCT) == 0); - - /* - * Can't enforce without accounting. We check the superblock - * qflags here instead of m_qflags because rootfs can have - * quota acct on ondisk without m_qflags' knowing. - */ - if (((flags & XFS_UQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 && - (flags & XFS_UQUOTA_ENFD)) - || - ((flags & XFS_PQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 && - (flags & XFS_GQUOTA_ACCT) == 0 && - (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 && - (flags & XFS_OQUOTA_ENFD))) { - xfs_debug(mp, - "%s: Can't enforce without acct, flags=%x sbflags=%x\n", - __func__, flags, mp->m_sb.sb_qflags); - return XFS_ERROR(EINVAL); - } - /* - * If everything's up to-date incore, then don't waste time. - */ - if ((mp->m_qflags & flags) == flags) - return XFS_ERROR(EEXIST); - - /* - * Change sb_qflags on disk but not incore mp->qflags - * if this is the root filesystem. - */ - spin_lock(&mp->m_sb_lock); - qf = mp->m_sb.sb_qflags; - mp->m_sb.sb_qflags = qf | flags; - spin_unlock(&mp->m_sb_lock); - - /* - * There's nothing to change if it's the same. - */ - if ((qf & flags) == flags && sbflags == 0) - return XFS_ERROR(EEXIST); - sbflags |= XFS_SB_QFLAGS; - - if ((error = xfs_qm_write_sb_changes(mp, sbflags))) - return (error); - /* - * If we aren't trying to switch on quota enforcement, we are done. - */ - if (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) != - (mp->m_qflags & XFS_UQUOTA_ACCT)) || - ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) != - (mp->m_qflags & XFS_PQUOTA_ACCT)) || - ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) != - (mp->m_qflags & XFS_GQUOTA_ACCT)) || - (flags & XFS_ALL_QUOTA_ENFD) == 0) - return (0); - - if (! XFS_IS_QUOTA_RUNNING(mp)) - return XFS_ERROR(ESRCH); - - /* - * Switch on quota enforcement in core. - */ - mutex_lock(&mp->m_quotainfo->qi_quotaofflock); - mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD); - mutex_unlock(&mp->m_quotainfo->qi_quotaofflock); - - return (0); -} - - -/* - * Return quota status information, such as uquota-off, enforcements, etc. - */ -int -xfs_qm_scall_getqstat( - struct xfs_mount *mp, - struct fs_quota_stat *out) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - struct xfs_inode *uip, *gip; - boolean_t tempuqip, tempgqip; - - uip = gip = NULL; - tempuqip = tempgqip = B_FALSE; - memset(out, 0, sizeof(fs_quota_stat_t)); - - out->qs_version = FS_QSTAT_VERSION; - if (!xfs_sb_version_hasquota(&mp->m_sb)) { - out->qs_uquota.qfs_ino = NULLFSINO; - out->qs_gquota.qfs_ino = NULLFSINO; - return (0); - } - out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags & - (XFS_ALL_QUOTA_ACCT| - XFS_ALL_QUOTA_ENFD)); - out->qs_pad = 0; - out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino; - out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino; - - if (q) { - uip = q->qi_uquotaip; - gip = q->qi_gquotaip; - } - if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) { - if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, - 0, 0, &uip) == 0) - tempuqip = B_TRUE; - } - if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) { - if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, - 0, 0, &gip) == 0) - tempgqip = B_TRUE; - } - if (uip) { - out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks; - out->qs_uquota.qfs_nextents = uip->i_d.di_nextents; - if (tempuqip) - IRELE(uip); - } - if (gip) { - out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks; - out->qs_gquota.qfs_nextents = gip->i_d.di_nextents; - if (tempgqip) - IRELE(gip); - } - if (q) { - out->qs_incoredqs = q->qi_dquots; - out->qs_btimelimit = q->qi_btimelimit; - out->qs_itimelimit = q->qi_itimelimit; - out->qs_rtbtimelimit = q->qi_rtbtimelimit; - out->qs_bwarnlimit = q->qi_bwarnlimit; - out->qs_iwarnlimit = q->qi_iwarnlimit; - } - return 0; -} - -#define XFS_DQ_MASK \ - (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK) - -/* - * Adjust quota limits, and start/stop timers accordingly. - */ -int -xfs_qm_scall_setqlim( - xfs_mount_t *mp, - xfs_dqid_t id, - uint type, - fs_disk_quota_t *newlim) -{ - struct xfs_quotainfo *q = mp->m_quotainfo; - xfs_disk_dquot_t *ddq; - xfs_dquot_t *dqp; - xfs_trans_t *tp; - int error; - xfs_qcnt_t hard, soft; - - if (newlim->d_fieldmask & ~XFS_DQ_MASK) - return EINVAL; - if ((newlim->d_fieldmask & XFS_DQ_MASK) == 0) - return 0; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM); - if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_disk_dquot_t) + 128, - 0, 0, XFS_DEFAULT_LOG_COUNT))) { - xfs_trans_cancel(tp, 0); - return (error); - } - - /* - * We don't want to race with a quotaoff so take the quotaoff lock. - * (We don't hold an inode lock, so there's nothing else to stop - * a quotaoff from happening). (XXXThis doesn't currently happen - * because we take the vfslock before calling xfs_qm_sysent). - */ - mutex_lock(&q->qi_quotaofflock); - - /* - * Get the dquot (locked), and join it to the transaction. - * Allocate the dquot if this doesn't exist. - */ - if ((error = xfs_qm_dqget(mp, NULL, id, type, XFS_QMOPT_DQALLOC, &dqp))) { - xfs_trans_cancel(tp, XFS_TRANS_ABORT); - ASSERT(error != ENOENT); - goto out_unlock; - } - xfs_trans_dqjoin(tp, dqp); - ddq = &dqp->q_core; - - /* - * Make sure that hardlimits are >= soft limits before changing. - */ - hard = (newlim->d_fieldmask & FS_DQ_BHARD) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_hardlimit) : - be64_to_cpu(ddq->d_blk_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_BSOFT) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_blk_softlimit) : - be64_to_cpu(ddq->d_blk_softlimit); - if (hard == 0 || hard >= soft) { - ddq->d_blk_hardlimit = cpu_to_be64(hard); - ddq->d_blk_softlimit = cpu_to_be64(soft); - if (id == 0) { - q->qi_bhardlimit = hard; - q->qi_bsoftlimit = soft; - } - } else { - xfs_debug(mp, "blkhard %Ld < blksoft %Ld\n", hard, soft); - } - hard = (newlim->d_fieldmask & FS_DQ_RTBHARD) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_hardlimit) : - be64_to_cpu(ddq->d_rtb_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_RTBSOFT) ? - (xfs_qcnt_t) XFS_BB_TO_FSB(mp, newlim->d_rtb_softlimit) : - be64_to_cpu(ddq->d_rtb_softlimit); - if (hard == 0 || hard >= soft) { - ddq->d_rtb_hardlimit = cpu_to_be64(hard); - ddq->d_rtb_softlimit = cpu_to_be64(soft); - if (id == 0) { - q->qi_rtbhardlimit = hard; - q->qi_rtbsoftlimit = soft; - } - } else { - xfs_debug(mp, "rtbhard %Ld < rtbsoft %Ld\n", hard, soft); - } - - hard = (newlim->d_fieldmask & FS_DQ_IHARD) ? - (xfs_qcnt_t) newlim->d_ino_hardlimit : - be64_to_cpu(ddq->d_ino_hardlimit); - soft = (newlim->d_fieldmask & FS_DQ_ISOFT) ? - (xfs_qcnt_t) newlim->d_ino_softlimit : - be64_to_cpu(ddq->d_ino_softlimit); - if (hard == 0 || hard >= soft) { - ddq->d_ino_hardlimit = cpu_to_be64(hard); - ddq->d_ino_softlimit = cpu_to_be64(soft); - if (id == 0) { - q->qi_ihardlimit = hard; - q->qi_isoftlimit = soft; - } - } else { - xfs_debug(mp, "ihard %Ld < isoft %Ld\n", hard, soft); - } - - /* - * Update warnings counter(s) if requested - */ - if (newlim->d_fieldmask & FS_DQ_BWARNS) - ddq->d_bwarns = cpu_to_be16(newlim->d_bwarns); - if (newlim->d_fieldmask & FS_DQ_IWARNS) - ddq->d_iwarns = cpu_to_be16(newlim->d_iwarns); - if (newlim->d_fieldmask & FS_DQ_RTBWARNS) - ddq->d_rtbwarns = cpu_to_be16(newlim->d_rtbwarns); - - if (id == 0) { - /* - * Timelimits for the super user set the relative time - * the other users can be over quota for this file system. - * If it is zero a default is used. Ditto for the default - * soft and hard limit values (already done, above), and - * for warnings. - */ - if (newlim->d_fieldmask & FS_DQ_BTIMER) { - q->qi_btimelimit = newlim->d_btimer; - ddq->d_btimer = cpu_to_be32(newlim->d_btimer); - } - if (newlim->d_fieldmask & FS_DQ_ITIMER) { - q->qi_itimelimit = newlim->d_itimer; - ddq->d_itimer = cpu_to_be32(newlim->d_itimer); - } - if (newlim->d_fieldmask & FS_DQ_RTBTIMER) { - q->qi_rtbtimelimit = newlim->d_rtbtimer; - ddq->d_rtbtimer = cpu_to_be32(newlim->d_rtbtimer); - } - if (newlim->d_fieldmask & FS_DQ_BWARNS) - q->qi_bwarnlimit = newlim->d_bwarns; - if (newlim->d_fieldmask & FS_DQ_IWARNS) - q->qi_iwarnlimit = newlim->d_iwarns; - if (newlim->d_fieldmask & FS_DQ_RTBWARNS) - q->qi_rtbwarnlimit = newlim->d_rtbwarns; - } else { - /* - * If the user is now over quota, start the timelimit. - * The user will not be 'warned'. - * Note that we keep the timers ticking, whether enforcement - * is on or off. We don't really want to bother with iterating - * over all ondisk dquots and turning the timers on/off. - */ - xfs_qm_adjust_dqtimers(mp, ddq); - } - dqp->dq_flags |= XFS_DQ_DIRTY; - xfs_trans_log_dquot(tp, dqp); - - error = xfs_trans_commit(tp, 0); - xfs_qm_dqrele(dqp); - - out_unlock: - mutex_unlock(&q->qi_quotaofflock); - return error; -} - -int -xfs_qm_scall_getquota( - xfs_mount_t *mp, - xfs_dqid_t id, - uint type, - fs_disk_quota_t *out) -{ - xfs_dquot_t *dqp; - int error; - - /* - * Try to get the dquot. We don't want it allocated on disk, so - * we aren't passing the XFS_QMOPT_DOALLOC flag. If it doesn't - * exist, we'll get ENOENT back. - */ - if ((error = xfs_qm_dqget(mp, NULL, id, type, 0, &dqp))) { - return (error); - } - - /* - * If everything's NULL, this dquot doesn't quite exist as far as - * our utility programs are concerned. - */ - if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) { - xfs_qm_dqput(dqp); - return XFS_ERROR(ENOENT); - } - /* - * Convert the disk dquot to the exportable format - */ - xfs_qm_export_dquot(mp, &dqp->q_core, out); - xfs_qm_dqput(dqp); - return (error ? XFS_ERROR(EFAULT) : 0); -} - - -STATIC int -xfs_qm_log_quotaoff_end( - xfs_mount_t *mp, - xfs_qoff_logitem_t *startqoff, - uint flags) -{ - xfs_trans_t *tp; - int error; - xfs_qoff_logitem_t *qoffi; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END); - - if ((error = xfs_trans_reserve(tp, 0, sizeof(xfs_qoff_logitem_t) * 2, - 0, 0, XFS_DEFAULT_LOG_COUNT))) { - xfs_trans_cancel(tp, 0); - return (error); - } - - qoffi = xfs_trans_get_qoff_item(tp, startqoff, - flags & XFS_ALL_QUOTA_ACCT); - xfs_trans_log_quotaoff_item(tp, qoffi); - - /* - * We have to make sure that the transaction is secure on disk before we - * return and actually stop quota accounting. So, make it synchronous. - * We don't care about quotoff's performance. - */ - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); - return (error); -} - - -STATIC int -xfs_qm_log_quotaoff( - xfs_mount_t *mp, - xfs_qoff_logitem_t **qoffstartp, - uint flags) -{ - xfs_trans_t *tp; - int error; - xfs_qoff_logitem_t *qoffi=NULL; - uint oldsbqflag=0; - - tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF); - if ((error = xfs_trans_reserve(tp, 0, - sizeof(xfs_qoff_logitem_t) * 2 + - mp->m_sb.sb_sectsize + 128, - 0, - 0, - XFS_DEFAULT_LOG_COUNT))) { - goto error0; - } - - qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT); - xfs_trans_log_quotaoff_item(tp, qoffi); - - spin_lock(&mp->m_sb_lock); - oldsbqflag = mp->m_sb.sb_qflags; - mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL; - spin_unlock(&mp->m_sb_lock); - - xfs_mod_sb(tp, XFS_SB_QFLAGS); - - /* - * We have to make sure that the transaction is secure on disk before we - * return and actually stop quota accounting. So, make it synchronous. - * We don't care about quotoff's performance. - */ - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); - -error0: - if (error) { - xfs_trans_cancel(tp, 0); - /* - * No one else is modifying sb_qflags, so this is OK. - * We still hold the quotaofflock. - */ - spin_lock(&mp->m_sb_lock); - mp->m_sb.sb_qflags = oldsbqflag; - spin_unlock(&mp->m_sb_lock); - } - *qoffstartp = qoffi; - return (error); -} - - -/* - * Translate an internal style on-disk-dquot to the exportable format. - * The main differences are that the counters/limits are all in Basic - * Blocks (BBs) instead of the internal FSBs, and all on-disk data has - * to be converted to the native endianness. - */ -STATIC void -xfs_qm_export_dquot( - xfs_mount_t *mp, - xfs_disk_dquot_t *src, - struct fs_disk_quota *dst) -{ - memset(dst, 0, sizeof(*dst)); - dst->d_version = FS_DQUOT_VERSION; /* different from src->d_version */ - dst->d_flags = xfs_qm_export_qtype_flags(src->d_flags); - dst->d_id = be32_to_cpu(src->d_id); - dst->d_blk_hardlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_hardlimit)); - dst->d_blk_softlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_blk_softlimit)); - dst->d_ino_hardlimit = be64_to_cpu(src->d_ino_hardlimit); - dst->d_ino_softlimit = be64_to_cpu(src->d_ino_softlimit); - dst->d_bcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_bcount)); - dst->d_icount = be64_to_cpu(src->d_icount); - dst->d_btimer = be32_to_cpu(src->d_btimer); - dst->d_itimer = be32_to_cpu(src->d_itimer); - dst->d_iwarns = be16_to_cpu(src->d_iwarns); - dst->d_bwarns = be16_to_cpu(src->d_bwarns); - dst->d_rtb_hardlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_hardlimit)); - dst->d_rtb_softlimit = - XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtb_softlimit)); - dst->d_rtbcount = XFS_FSB_TO_BB(mp, be64_to_cpu(src->d_rtbcount)); - dst->d_rtbtimer = be32_to_cpu(src->d_rtbtimer); - dst->d_rtbwarns = be16_to_cpu(src->d_rtbwarns); - - /* - * Internally, we don't reset all the timers when quota enforcement - * gets turned off. No need to confuse the user level code, - * so return zeroes in that case. - */ - if ((!XFS_IS_UQUOTA_ENFORCED(mp) && src->d_flags == XFS_DQ_USER) || - (!XFS_IS_OQUOTA_ENFORCED(mp) && - (src->d_flags & (XFS_DQ_PROJ | XFS_DQ_GROUP)))) { - dst->d_btimer = 0; - dst->d_itimer = 0; - dst->d_rtbtimer = 0; - } - -#ifdef DEBUG - if (((XFS_IS_UQUOTA_ENFORCED(mp) && dst->d_flags == FS_USER_QUOTA) || - (XFS_IS_OQUOTA_ENFORCED(mp) && - (dst->d_flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)))) && - dst->d_id != 0) { - if (((int) dst->d_bcount >= (int) dst->d_blk_softlimit) && - (dst->d_blk_softlimit > 0)) { - ASSERT(dst->d_btimer != 0); - } - if (((int) dst->d_icount >= (int) dst->d_ino_softlimit) && - (dst->d_ino_softlimit > 0)) { - ASSERT(dst->d_itimer != 0); - } - } -#endif -} - -STATIC uint -xfs_qm_export_qtype_flags( - uint flags) -{ - /* - * Can't be more than one, or none. - */ - ASSERT((flags & (FS_PROJ_QUOTA | FS_USER_QUOTA)) != - (FS_PROJ_QUOTA | FS_USER_QUOTA)); - ASSERT((flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)) != - (FS_PROJ_QUOTA | FS_GROUP_QUOTA)); - ASSERT((flags & (FS_USER_QUOTA | FS_GROUP_QUOTA)) != - (FS_USER_QUOTA | FS_GROUP_QUOTA)); - ASSERT((flags & (FS_PROJ_QUOTA|FS_USER_QUOTA|FS_GROUP_QUOTA)) != 0); - - return (flags & XFS_DQ_USER) ? - FS_USER_QUOTA : (flags & XFS_DQ_PROJ) ? - FS_PROJ_QUOTA : FS_GROUP_QUOTA; -} - -STATIC uint -xfs_qm_export_flags( - uint flags) -{ - uint uflags; - - uflags = 0; - if (flags & XFS_UQUOTA_ACCT) - uflags |= FS_QUOTA_UDQ_ACCT; - if (flags & XFS_PQUOTA_ACCT) - uflags |= FS_QUOTA_PDQ_ACCT; - if (flags & XFS_GQUOTA_ACCT) - uflags |= FS_QUOTA_GDQ_ACCT; - if (flags & XFS_UQUOTA_ENFD) - uflags |= FS_QUOTA_UDQ_ENFD; - if (flags & (XFS_OQUOTA_ENFD)) { - uflags |= (flags & XFS_GQUOTA_ACCT) ? - FS_QUOTA_GDQ_ENFD : FS_QUOTA_PDQ_ENFD; - } - return (uflags); -} - - -STATIC int -xfs_dqrele_inode( - struct xfs_inode *ip, - struct xfs_perag *pag, - int flags) -{ - /* skip quota inodes */ - if (ip == ip->i_mount->m_quotainfo->qi_uquotaip || - ip == ip->i_mount->m_quotainfo->qi_gquotaip) { - ASSERT(ip->i_udquot == NULL); - ASSERT(ip->i_gdquot == NULL); - return 0; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) { - xfs_qm_dqrele(ip->i_udquot); - ip->i_udquot = NULL; - } - if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) { - xfs_qm_dqrele(ip->i_gdquot); - ip->i_gdquot = NULL; - } - xfs_iunlock(ip, XFS_ILOCK_EXCL); - return 0; -} - - -/* - * Go thru all the inodes in the file system, releasing their dquots. - * - * Note that the mount structure gets modified to indicate that quotas are off - * AFTER this, in the case of quotaoff. - */ -void -xfs_qm_dqrele_all_inodes( - struct xfs_mount *mp, - uint flags) -{ - ASSERT(mp->m_quotainfo); - xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags); -} diff --git a/fs/xfs/quota/xfs_quota_priv.h b/fs/xfs/quota/xfs_quota_priv.h deleted file mode 100644 index 94a3d927d716..000000000000 --- a/fs/xfs/quota/xfs_quota_priv.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_QUOTA_PRIV_H__ -#define __XFS_QUOTA_PRIV_H__ - -/* - * Number of bmaps that we ask from bmapi when doing a quotacheck. - * We make this restriction to keep the memory usage to a minimum. - */ -#define XFS_DQITER_MAP_SIZE 10 - -/* - * Hash into a bucket in the dquot hash table, based on <mp, id>. - */ -#define XFS_DQ_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \ - (__psunsigned_t)(id)) & \ - (xfs_Gqm->qm_dqhashmask - 1)) -#define XFS_DQ_HASH(mp, id, type) (type == XFS_DQ_USER ? \ - (xfs_Gqm->qm_usr_dqhtable + \ - XFS_DQ_HASHVAL(mp, id)) : \ - (xfs_Gqm->qm_grp_dqhtable + \ - XFS_DQ_HASHVAL(mp, id))) -#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \ - !dqp->q_core.d_blk_hardlimit && \ - !dqp->q_core.d_blk_softlimit && \ - !dqp->q_core.d_rtb_hardlimit && \ - !dqp->q_core.d_rtb_softlimit && \ - !dqp->q_core.d_ino_hardlimit && \ - !dqp->q_core.d_ino_softlimit && \ - !dqp->q_core.d_bcount && \ - !dqp->q_core.d_rtbcount && \ - !dqp->q_core.d_icount) - -#define DQFLAGTO_TYPESTR(d) (((d)->dq_flags & XFS_DQ_USER) ? "USR" : \ - (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : \ - (((d)->dq_flags & XFS_DQ_PROJ) ? "PRJ":"???"))) - -#endif /* __XFS_QUOTA_PRIV_H__ */ diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c deleted file mode 100644 index 4d00ee67792d..000000000000 --- a/fs/xfs/quota/xfs_trans_dquot.c +++ /dev/null @@ -1,890 +0,0 @@ -/* - * Copyright (c) 2000-2002 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_alloc.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_inode.h" -#include "xfs_itable.h" -#include "xfs_bmap.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_attr.h" -#include "xfs_buf_item.h" -#include "xfs_trans_priv.h" -#include "xfs_qm.h" - -STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *); - -/* - * Add the locked dquot to the transaction. - * The dquot must be locked, and it cannot be associated with any - * transaction. - */ -void -xfs_trans_dqjoin( - xfs_trans_t *tp, - xfs_dquot_t *dqp) -{ - ASSERT(dqp->q_transp != tp); - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - ASSERT(dqp->q_logitem.qli_dquot == dqp); - - /* - * Get a log_item_desc to point at the new item. - */ - xfs_trans_add_item(tp, &dqp->q_logitem.qli_item); - - /* - * Initialize d_transp so we can later determine if this dquot is - * associated with this transaction. - */ - dqp->q_transp = tp; -} - - -/* - * This is called to mark the dquot as needing - * to be logged when the transaction is committed. The dquot must - * already be associated with the given transaction. - * Note that it marks the entire transaction as dirty. In the ordinary - * case, this gets called via xfs_trans_commit, after the transaction - * is already dirty. However, there's nothing stop this from getting - * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY - * flag. - */ -void -xfs_trans_log_dquot( - xfs_trans_t *tp, - xfs_dquot_t *dqp) -{ - ASSERT(dqp->q_transp == tp); - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - - tp->t_flags |= XFS_TRANS_DIRTY; - dqp->q_logitem.qli_item.li_desc->lid_flags |= XFS_LID_DIRTY; -} - -/* - * Carry forward whatever is left of the quota blk reservation to - * the spanky new transaction - */ -void -xfs_trans_dup_dqinfo( - xfs_trans_t *otp, - xfs_trans_t *ntp) -{ - xfs_dqtrx_t *oq, *nq; - int i,j; - xfs_dqtrx_t *oqa, *nqa; - - if (!otp->t_dqinfo) - return; - - xfs_trans_alloc_dqinfo(ntp); - oqa = otp->t_dqinfo->dqa_usrdquots; - nqa = ntp->t_dqinfo->dqa_usrdquots; - - /* - * Because the quota blk reservation is carried forward, - * it is also necessary to carry forward the DQ_DIRTY flag. - */ - if(otp->t_flags & XFS_TRANS_DQ_DIRTY) - ntp->t_flags |= XFS_TRANS_DQ_DIRTY; - - for (j = 0; j < 2; j++) { - for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { - if (oqa[i].qt_dquot == NULL) - break; - oq = &oqa[i]; - nq = &nqa[i]; - - nq->qt_dquot = oq->qt_dquot; - nq->qt_bcount_delta = nq->qt_icount_delta = 0; - nq->qt_rtbcount_delta = 0; - - /* - * Transfer whatever is left of the reservations. - */ - nq->qt_blk_res = oq->qt_blk_res - oq->qt_blk_res_used; - oq->qt_blk_res = oq->qt_blk_res_used; - - nq->qt_rtblk_res = oq->qt_rtblk_res - - oq->qt_rtblk_res_used; - oq->qt_rtblk_res = oq->qt_rtblk_res_used; - - nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used; - oq->qt_ino_res = oq->qt_ino_res_used; - - } - oqa = otp->t_dqinfo->dqa_grpdquots; - nqa = ntp->t_dqinfo->dqa_grpdquots; - } -} - -/* - * Wrap around mod_dquot to account for both user and group quotas. - */ -void -xfs_trans_mod_dquot_byino( - xfs_trans_t *tp, - xfs_inode_t *ip, - uint field, - long delta) -{ - xfs_mount_t *mp = tp->t_mountp; - - if (!XFS_IS_QUOTA_RUNNING(mp) || - !XFS_IS_QUOTA_ON(mp) || - ip->i_ino == mp->m_sb.sb_uquotino || - ip->i_ino == mp->m_sb.sb_gquotino) - return; - - if (tp->t_dqinfo == NULL) - xfs_trans_alloc_dqinfo(tp); - - if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) - (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta); - if (XFS_IS_OQUOTA_ON(mp) && ip->i_gdquot) - (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta); -} - -STATIC xfs_dqtrx_t * -xfs_trans_get_dqtrx( - xfs_trans_t *tp, - xfs_dquot_t *dqp) -{ - int i; - xfs_dqtrx_t *qa; - - qa = XFS_QM_ISUDQ(dqp) ? - tp->t_dqinfo->dqa_usrdquots : tp->t_dqinfo->dqa_grpdquots; - - for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { - if (qa[i].qt_dquot == NULL || - qa[i].qt_dquot == dqp) - return &qa[i]; - } - - return NULL; -} - -/* - * Make the changes in the transaction structure. - * The moral equivalent to xfs_trans_mod_sb(). - * We don't touch any fields in the dquot, so we don't care - * if it's locked or not (most of the time it won't be). - */ -void -xfs_trans_mod_dquot( - xfs_trans_t *tp, - xfs_dquot_t *dqp, - uint field, - long delta) -{ - xfs_dqtrx_t *qtrx; - - ASSERT(tp); - ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp)); - qtrx = NULL; - - if (tp->t_dqinfo == NULL) - xfs_trans_alloc_dqinfo(tp); - /* - * Find either the first free slot or the slot that belongs - * to this dquot. - */ - qtrx = xfs_trans_get_dqtrx(tp, dqp); - ASSERT(qtrx); - if (qtrx->qt_dquot == NULL) - qtrx->qt_dquot = dqp; - - switch (field) { - - /* - * regular disk blk reservation - */ - case XFS_TRANS_DQ_RES_BLKS: - qtrx->qt_blk_res += (ulong)delta; - break; - - /* - * inode reservation - */ - case XFS_TRANS_DQ_RES_INOS: - qtrx->qt_ino_res += (ulong)delta; - break; - - /* - * disk blocks used. - */ - case XFS_TRANS_DQ_BCOUNT: - if (qtrx->qt_blk_res && delta > 0) { - qtrx->qt_blk_res_used += (ulong)delta; - ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used); - } - qtrx->qt_bcount_delta += delta; - break; - - case XFS_TRANS_DQ_DELBCOUNT: - qtrx->qt_delbcnt_delta += delta; - break; - - /* - * Inode Count - */ - case XFS_TRANS_DQ_ICOUNT: - if (qtrx->qt_ino_res && delta > 0) { - qtrx->qt_ino_res_used += (ulong)delta; - ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); - } - qtrx->qt_icount_delta += delta; - break; - - /* - * rtblk reservation - */ - case XFS_TRANS_DQ_RES_RTBLKS: - qtrx->qt_rtblk_res += (ulong)delta; - break; - - /* - * rtblk count - */ - case XFS_TRANS_DQ_RTBCOUNT: - if (qtrx->qt_rtblk_res && delta > 0) { - qtrx->qt_rtblk_res_used += (ulong)delta; - ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used); - } - qtrx->qt_rtbcount_delta += delta; - break; - - case XFS_TRANS_DQ_DELRTBCOUNT: - qtrx->qt_delrtb_delta += delta; - break; - - default: - ASSERT(0); - } - tp->t_flags |= XFS_TRANS_DQ_DIRTY; -} - - -/* - * Given an array of dqtrx structures, lock all the dquots associated - * and join them to the transaction, provided they have been modified. - * We know that the highest number of dquots (of one type - usr OR grp), - * involved in a transaction is 2 and that both usr and grp combined - 3. - * So, we don't attempt to make this very generic. - */ -STATIC void -xfs_trans_dqlockedjoin( - xfs_trans_t *tp, - xfs_dqtrx_t *q) -{ - ASSERT(q[0].qt_dquot != NULL); - if (q[1].qt_dquot == NULL) { - xfs_dqlock(q[0].qt_dquot); - xfs_trans_dqjoin(tp, q[0].qt_dquot); - } else { - ASSERT(XFS_QM_TRANS_MAXDQS == 2); - xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot); - xfs_trans_dqjoin(tp, q[0].qt_dquot); - xfs_trans_dqjoin(tp, q[1].qt_dquot); - } -} - - -/* - * Called by xfs_trans_commit() and similar in spirit to - * xfs_trans_apply_sb_deltas(). - * Go thru all the dquots belonging to this transaction and modify the - * INCORE dquot to reflect the actual usages. - * Unreserve just the reservations done by this transaction. - * dquot is still left locked at exit. - */ -void -xfs_trans_apply_dquot_deltas( - xfs_trans_t *tp) -{ - int i, j; - xfs_dquot_t *dqp; - xfs_dqtrx_t *qtrx, *qa; - xfs_disk_dquot_t *d; - long totalbdelta; - long totalrtbdelta; - - if (!(tp->t_flags & XFS_TRANS_DQ_DIRTY)) - return; - - ASSERT(tp->t_dqinfo); - qa = tp->t_dqinfo->dqa_usrdquots; - for (j = 0; j < 2; j++) { - if (qa[0].qt_dquot == NULL) { - qa = tp->t_dqinfo->dqa_grpdquots; - continue; - } - - /* - * Lock all of the dquots and join them to the transaction. - */ - xfs_trans_dqlockedjoin(tp, qa); - - for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { - qtrx = &qa[i]; - /* - * The array of dquots is filled - * sequentially, not sparsely. - */ - if ((dqp = qtrx->qt_dquot) == NULL) - break; - - ASSERT(XFS_DQ_IS_LOCKED(dqp)); - ASSERT(dqp->q_transp == tp); - - /* - * adjust the actual number of blocks used - */ - d = &dqp->q_core; - - /* - * The issue here is - sometimes we don't make a blkquota - * reservation intentionally to be fair to users - * (when the amount is small). On the other hand, - * delayed allocs do make reservations, but that's - * outside of a transaction, so we have no - * idea how much was really reserved. - * So, here we've accumulated delayed allocation blks and - * non-delay blks. The assumption is that the - * delayed ones are always reserved (outside of a - * transaction), and the others may or may not have - * quota reservations. - */ - totalbdelta = qtrx->qt_bcount_delta + - qtrx->qt_delbcnt_delta; - totalrtbdelta = qtrx->qt_rtbcount_delta + - qtrx->qt_delrtb_delta; -#ifdef DEBUG - if (totalbdelta < 0) - ASSERT(be64_to_cpu(d->d_bcount) >= - -totalbdelta); - - if (totalrtbdelta < 0) - ASSERT(be64_to_cpu(d->d_rtbcount) >= - -totalrtbdelta); - - if (qtrx->qt_icount_delta < 0) - ASSERT(be64_to_cpu(d->d_icount) >= - -qtrx->qt_icount_delta); -#endif - if (totalbdelta) - be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta); - - if (qtrx->qt_icount_delta) - be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta); - - if (totalrtbdelta) - be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta); - - /* - * Get any default limits in use. - * Start/reset the timer(s) if needed. - */ - if (d->d_id) { - xfs_qm_adjust_dqlimits(tp->t_mountp, d); - xfs_qm_adjust_dqtimers(tp->t_mountp, d); - } - - dqp->dq_flags |= XFS_DQ_DIRTY; - /* - * add this to the list of items to get logged - */ - xfs_trans_log_dquot(tp, dqp); - /* - * Take off what's left of the original reservation. - * In case of delayed allocations, there's no - * reservation that a transaction structure knows of. - */ - if (qtrx->qt_blk_res != 0) { - if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) { - if (qtrx->qt_blk_res > - qtrx->qt_blk_res_used) - dqp->q_res_bcount -= (xfs_qcnt_t) - (qtrx->qt_blk_res - - qtrx->qt_blk_res_used); - else - dqp->q_res_bcount -= (xfs_qcnt_t) - (qtrx->qt_blk_res_used - - qtrx->qt_blk_res); - } - } else { - /* - * These blks were never reserved, either inside - * a transaction or outside one (in a delayed - * allocation). Also, this isn't always a - * negative number since we sometimes - * deliberately skip quota reservations. - */ - if (qtrx->qt_bcount_delta) { - dqp->q_res_bcount += - (xfs_qcnt_t)qtrx->qt_bcount_delta; - } - } - /* - * Adjust the RT reservation. - */ - if (qtrx->qt_rtblk_res != 0) { - if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) { - if (qtrx->qt_rtblk_res > - qtrx->qt_rtblk_res_used) - dqp->q_res_rtbcount -= (xfs_qcnt_t) - (qtrx->qt_rtblk_res - - qtrx->qt_rtblk_res_used); - else - dqp->q_res_rtbcount -= (xfs_qcnt_t) - (qtrx->qt_rtblk_res_used - - qtrx->qt_rtblk_res); - } - } else { - if (qtrx->qt_rtbcount_delta) - dqp->q_res_rtbcount += - (xfs_qcnt_t)qtrx->qt_rtbcount_delta; - } - - /* - * Adjust the inode reservation. - */ - if (qtrx->qt_ino_res != 0) { - ASSERT(qtrx->qt_ino_res >= - qtrx->qt_ino_res_used); - if (qtrx->qt_ino_res > qtrx->qt_ino_res_used) - dqp->q_res_icount -= (xfs_qcnt_t) - (qtrx->qt_ino_res - - qtrx->qt_ino_res_used); - } else { - if (qtrx->qt_icount_delta) - dqp->q_res_icount += - (xfs_qcnt_t)qtrx->qt_icount_delta; - } - - ASSERT(dqp->q_res_bcount >= - be64_to_cpu(dqp->q_core.d_bcount)); - ASSERT(dqp->q_res_icount >= - be64_to_cpu(dqp->q_core.d_icount)); - ASSERT(dqp->q_res_rtbcount >= - be64_to_cpu(dqp->q_core.d_rtbcount)); - } - /* - * Do the group quotas next - */ - qa = tp->t_dqinfo->dqa_grpdquots; - } -} - -/* - * Release the reservations, and adjust the dquots accordingly. - * This is called only when the transaction is being aborted. If by - * any chance we have done dquot modifications incore (ie. deltas) already, - * we simply throw those away, since that's the expected behavior - * when a transaction is curtailed without a commit. - */ -void -xfs_trans_unreserve_and_mod_dquots( - xfs_trans_t *tp) -{ - int i, j; - xfs_dquot_t *dqp; - xfs_dqtrx_t *qtrx, *qa; - boolean_t locked; - - if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY)) - return; - - qa = tp->t_dqinfo->dqa_usrdquots; - - for (j = 0; j < 2; j++) { - for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { - qtrx = &qa[i]; - /* - * We assume that the array of dquots is filled - * sequentially, not sparsely. - */ - if ((dqp = qtrx->qt_dquot) == NULL) - break; - /* - * Unreserve the original reservation. We don't care - * about the number of blocks used field, or deltas. - * Also we don't bother to zero the fields. - */ - locked = B_FALSE; - if (qtrx->qt_blk_res) { - xfs_dqlock(dqp); - locked = B_TRUE; - dqp->q_res_bcount -= - (xfs_qcnt_t)qtrx->qt_blk_res; - } - if (qtrx->qt_ino_res) { - if (!locked) { - xfs_dqlock(dqp); - locked = B_TRUE; - } - dqp->q_res_icount -= - (xfs_qcnt_t)qtrx->qt_ino_res; - } - - if (qtrx->qt_rtblk_res) { - if (!locked) { - xfs_dqlock(dqp); - locked = B_TRUE; - } - dqp->q_res_rtbcount -= - (xfs_qcnt_t)qtrx->qt_rtblk_res; - } - if (locked) - xfs_dqunlock(dqp); - - } - qa = tp->t_dqinfo->dqa_grpdquots; - } -} - -STATIC void -xfs_quota_warn( - struct xfs_mount *mp, - struct xfs_dquot *dqp, - int type) -{ - /* no warnings for project quotas - we just return ENOSPC later */ - if (dqp->dq_flags & XFS_DQ_PROJ) - return; - quota_send_warning((dqp->dq_flags & XFS_DQ_USER) ? USRQUOTA : GRPQUOTA, - be32_to_cpu(dqp->q_core.d_id), mp->m_super->s_dev, - type); -} - -/* - * This reserves disk blocks and inodes against a dquot. - * Flags indicate if the dquot is to be locked here and also - * if the blk reservation is for RT or regular blocks. - * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check. - */ -STATIC int -xfs_trans_dqresv( - xfs_trans_t *tp, - xfs_mount_t *mp, - xfs_dquot_t *dqp, - long nblks, - long ninos, - uint flags) -{ - xfs_qcnt_t hardlimit; - xfs_qcnt_t softlimit; - time_t timer; - xfs_qwarncnt_t warns; - xfs_qwarncnt_t warnlimit; - xfs_qcnt_t count; - xfs_qcnt_t *resbcountp; - xfs_quotainfo_t *q = mp->m_quotainfo; - - - xfs_dqlock(dqp); - - if (flags & XFS_TRANS_DQ_RES_BLKS) { - hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit); - if (!hardlimit) - hardlimit = q->qi_bhardlimit; - softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit); - if (!softlimit) - softlimit = q->qi_bsoftlimit; - timer = be32_to_cpu(dqp->q_core.d_btimer); - warns = be16_to_cpu(dqp->q_core.d_bwarns); - warnlimit = dqp->q_mount->m_quotainfo->qi_bwarnlimit; - resbcountp = &dqp->q_res_bcount; - } else { - ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS); - hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit); - if (!hardlimit) - hardlimit = q->qi_rtbhardlimit; - softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit); - if (!softlimit) - softlimit = q->qi_rtbsoftlimit; - timer = be32_to_cpu(dqp->q_core.d_rtbtimer); - warns = be16_to_cpu(dqp->q_core.d_rtbwarns); - warnlimit = dqp->q_mount->m_quotainfo->qi_rtbwarnlimit; - resbcountp = &dqp->q_res_rtbcount; - } - - if ((flags & XFS_QMOPT_FORCE_RES) == 0 && - dqp->q_core.d_id && - ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) || - (XFS_IS_OQUOTA_ENFORCED(dqp->q_mount) && - (XFS_QM_ISPDQ(dqp) || XFS_QM_ISGDQ(dqp))))) { - if (nblks > 0) { - /* - * dquot is locked already. See if we'd go over the - * hardlimit or exceed the timelimit if we allocate - * nblks. - */ - if (hardlimit > 0ULL && - hardlimit <= nblks + *resbcountp) { - xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN); - goto error_return; - } - if (softlimit > 0ULL && - softlimit <= nblks + *resbcountp) { - if ((timer != 0 && get_seconds() > timer) || - (warns != 0 && warns >= warnlimit)) { - xfs_quota_warn(mp, dqp, - QUOTA_NL_BSOFTLONGWARN); - goto error_return; - } - - xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN); - } - } - if (ninos > 0) { - count = be64_to_cpu(dqp->q_core.d_icount); - timer = be32_to_cpu(dqp->q_core.d_itimer); - warns = be16_to_cpu(dqp->q_core.d_iwarns); - warnlimit = dqp->q_mount->m_quotainfo->qi_iwarnlimit; - hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit); - if (!hardlimit) - hardlimit = q->qi_ihardlimit; - softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit); - if (!softlimit) - softlimit = q->qi_isoftlimit; - - if (hardlimit > 0ULL && count >= hardlimit) { - xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN); - goto error_return; - } - if (softlimit > 0ULL && count >= softlimit) { - if ((timer != 0 && get_seconds() > timer) || - (warns != 0 && warns >= warnlimit)) { - xfs_quota_warn(mp, dqp, - QUOTA_NL_ISOFTLONGWARN); - goto error_return; - } - xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN); - } - } - } - - /* - * Change the reservation, but not the actual usage. - * Note that q_res_bcount = q_core.d_bcount + resv - */ - (*resbcountp) += (xfs_qcnt_t)nblks; - if (ninos != 0) - dqp->q_res_icount += (xfs_qcnt_t)ninos; - - /* - * note the reservation amt in the trans struct too, - * so that the transaction knows how much was reserved by - * it against this particular dquot. - * We don't do this when we are reserving for a delayed allocation, - * because we don't have the luxury of a transaction envelope then. - */ - if (tp) { - ASSERT(tp->t_dqinfo); - ASSERT(flags & XFS_QMOPT_RESBLK_MASK); - if (nblks != 0) - xfs_trans_mod_dquot(tp, dqp, - flags & XFS_QMOPT_RESBLK_MASK, - nblks); - if (ninos != 0) - xfs_trans_mod_dquot(tp, dqp, - XFS_TRANS_DQ_RES_INOS, - ninos); - } - ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount)); - ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount)); - ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount)); - - xfs_dqunlock(dqp); - return 0; - -error_return: - xfs_dqunlock(dqp); - if (flags & XFS_QMOPT_ENOSPC) - return ENOSPC; - return EDQUOT; -} - - -/* - * Given dquot(s), make disk block and/or inode reservations against them. - * The fact that this does the reservation against both the usr and - * grp/prj quotas is important, because this follows a both-or-nothing - * approach. - * - * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown. - * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota. - * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks - * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks - * dquots are unlocked on return, if they were not locked by caller. - */ -int -xfs_trans_reserve_quota_bydquots( - xfs_trans_t *tp, - xfs_mount_t *mp, - xfs_dquot_t *udqp, - xfs_dquot_t *gdqp, - long nblks, - long ninos, - uint flags) -{ - int resvd = 0, error; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - - if (tp && tp->t_dqinfo == NULL) - xfs_trans_alloc_dqinfo(tp); - - ASSERT(flags & XFS_QMOPT_RESBLK_MASK); - - if (udqp) { - error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, - (flags & ~XFS_QMOPT_ENOSPC)); - if (error) - return error; - resvd = 1; - } - - if (gdqp) { - error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags); - if (error) { - /* - * can't do it, so backout previous reservation - */ - if (resvd) { - flags |= XFS_QMOPT_FORCE_RES; - xfs_trans_dqresv(tp, mp, udqp, - -nblks, -ninos, flags); - } - return error; - } - } - - /* - * Didn't change anything critical, so, no need to log - */ - return 0; -} - - -/* - * Lock the dquot and change the reservation if we can. - * This doesn't change the actual usage, just the reservation. - * The inode sent in is locked. - */ -int -xfs_trans_reserve_quota_nblks( - struct xfs_trans *tp, - struct xfs_inode *ip, - long nblks, - long ninos, - uint flags) -{ - struct xfs_mount *mp = ip->i_mount; - - if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) - return 0; - if (XFS_IS_PQUOTA_ON(mp)) - flags |= XFS_QMOPT_ENOSPC; - - ASSERT(ip->i_ino != mp->m_sb.sb_uquotino); - ASSERT(ip->i_ino != mp->m_sb.sb_gquotino); - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == - XFS_TRANS_DQ_RES_RTBLKS || - (flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == - XFS_TRANS_DQ_RES_BLKS); - - /* - * Reserve nblks against these dquots, with trans as the mediator. - */ - return xfs_trans_reserve_quota_bydquots(tp, mp, - ip->i_udquot, ip->i_gdquot, - nblks, ninos, flags); -} - -/* - * This routine is called to allocate a quotaoff log item. - */ -xfs_qoff_logitem_t * -xfs_trans_get_qoff_item( - xfs_trans_t *tp, - xfs_qoff_logitem_t *startqoff, - uint flags) -{ - xfs_qoff_logitem_t *q; - - ASSERT(tp != NULL); - - q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags); - ASSERT(q != NULL); - - /* - * Get a log_item_desc to point at the new item. - */ - xfs_trans_add_item(tp, &q->qql_item); - return q; -} - - -/* - * This is called to mark the quotaoff logitem as needing - * to be logged when the transaction is committed. The logitem must - * already be associated with the given transaction. - */ -void -xfs_trans_log_quotaoff_item( - xfs_trans_t *tp, - xfs_qoff_logitem_t *qlp) -{ - tp->t_flags |= XFS_TRANS_DIRTY; - qlp->qql_item.li_desc->lid_flags |= XFS_LID_DIRTY; -} - -STATIC void -xfs_trans_alloc_dqinfo( - xfs_trans_t *tp) -{ - tp->t_dqinfo = kmem_zone_zalloc(xfs_Gqm->qm_dqtrxzone, KM_SLEEP); -} - -void -xfs_trans_free_dqinfo( - xfs_trans_t *tp) -{ - if (!tp->t_dqinfo) - return; - kmem_zone_free(xfs_Gqm->qm_dqtrxzone, tp->t_dqinfo); - tp->t_dqinfo = NULL; -} |