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-rw-r--r--fs/xfs/Makefile1
-rw-r--r--fs/xfs/xfs_export.c6
-rw-r--r--fs/xfs/xfs_file.c28
-rw-r--r--fs/xfs/xfs_fsops.c6
-rw-r--r--fs/xfs/xfs_inode.c4
-rw-r--r--fs/xfs/xfs_inode.h9
-rw-r--r--fs/xfs/xfs_ioctl.c11
-rw-r--r--fs/xfs/xfs_iops.c49
-rw-r--r--fs/xfs/xfs_iops.h1
-rw-r--r--fs/xfs/xfs_mount.h11
-rw-r--r--fs/xfs/xfs_pnfs.c324
-rw-r--r--fs/xfs/xfs_pnfs.h18
-rw-r--r--fs/xfs/xfs_qm.c5
13 files changed, 434 insertions, 39 deletions
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index d61799949580..df6828570e87 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -121,3 +121,4 @@ xfs-$(CONFIG_XFS_POSIX_ACL) += xfs_acl.o
xfs-$(CONFIG_PROC_FS) += xfs_stats.o
xfs-$(CONFIG_SYSCTL) += xfs_sysctl.o
xfs-$(CONFIG_COMPAT) += xfs_ioctl32.o
+xfs-$(CONFIG_NFSD_PNFS) += xfs_pnfs.o
diff --git a/fs/xfs/xfs_export.c b/fs/xfs/xfs_export.c
index 5eb4a14e0a0f..b97359ba2648 100644
--- a/fs/xfs/xfs_export.c
+++ b/fs/xfs/xfs_export.c
@@ -30,6 +30,7 @@
#include "xfs_trace.h"
#include "xfs_icache.h"
#include "xfs_log.h"
+#include "xfs_pnfs.h"
/*
* Note that we only accept fileids which are long enough rather than allow
@@ -245,4 +246,9 @@ const struct export_operations xfs_export_operations = {
.fh_to_parent = xfs_fs_fh_to_parent,
.get_parent = xfs_fs_get_parent,
.commit_metadata = xfs_fs_nfs_commit_metadata,
+#ifdef CONFIG_NFSD_PNFS
+ .get_uuid = xfs_fs_get_uuid,
+ .map_blocks = xfs_fs_map_blocks,
+ .commit_blocks = xfs_fs_commit_blocks,
+#endif
};
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 1cdba95c78cb..a2e1cb8a568b 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -36,6 +36,7 @@
#include "xfs_trace.h"
#include "xfs_log.h"
#include "xfs_icache.h"
+#include "xfs_pnfs.h"
#include <linux/aio.h>
#include <linux/dcache.h>
@@ -396,7 +397,8 @@ STATIC int /* error (positive) */
xfs_zero_last_block(
struct xfs_inode *ip,
xfs_fsize_t offset,
- xfs_fsize_t isize)
+ xfs_fsize_t isize,
+ bool *did_zeroing)
{
struct xfs_mount *mp = ip->i_mount;
xfs_fileoff_t last_fsb = XFS_B_TO_FSBT(mp, isize);
@@ -424,6 +426,7 @@ xfs_zero_last_block(
zero_len = mp->m_sb.sb_blocksize - zero_offset;
if (isize + zero_len > offset)
zero_len = offset - isize;
+ *did_zeroing = true;
return xfs_iozero(ip, isize, zero_len);
}
@@ -442,7 +445,8 @@ int /* error (positive) */
xfs_zero_eof(
struct xfs_inode *ip,
xfs_off_t offset, /* starting I/O offset */
- xfs_fsize_t isize) /* current inode size */
+ xfs_fsize_t isize, /* current inode size */
+ bool *did_zeroing)
{
struct xfs_mount *mp = ip->i_mount;
xfs_fileoff_t start_zero_fsb;
@@ -464,7 +468,7 @@ xfs_zero_eof(
* We only zero a part of that block so it is handled specially.
*/
if (XFS_B_FSB_OFFSET(mp, isize) != 0) {
- error = xfs_zero_last_block(ip, offset, isize);
+ error = xfs_zero_last_block(ip, offset, isize, did_zeroing);
if (error)
return error;
}
@@ -524,6 +528,7 @@ xfs_zero_eof(
if (error)
return error;
+ *did_zeroing = true;
start_zero_fsb = imap.br_startoff + imap.br_blockcount;
ASSERT(start_zero_fsb <= (end_zero_fsb + 1));
}
@@ -554,6 +559,10 @@ restart:
if (error)
return error;
+ error = xfs_break_layouts(inode, iolock);
+ if (error)
+ return error;
+
/*
* If the offset is beyond the size of the file, we need to zero any
* blocks that fall between the existing EOF and the start of this
@@ -562,13 +571,15 @@ restart:
* having to redo all checks before.
*/
if (*pos > i_size_read(inode)) {
+ bool zero = false;
+
if (*iolock == XFS_IOLOCK_SHARED) {
xfs_rw_iunlock(ip, *iolock);
*iolock = XFS_IOLOCK_EXCL;
xfs_rw_ilock(ip, *iolock);
goto restart;
}
- error = xfs_zero_eof(ip, *pos, i_size_read(inode));
+ error = xfs_zero_eof(ip, *pos, i_size_read(inode), &zero);
if (error)
return error;
}
@@ -822,6 +833,7 @@ xfs_file_fallocate(
struct xfs_inode *ip = XFS_I(inode);
long error;
enum xfs_prealloc_flags flags = 0;
+ uint iolock = XFS_IOLOCK_EXCL;
loff_t new_size = 0;
if (!S_ISREG(inode->i_mode))
@@ -830,7 +842,11 @@ xfs_file_fallocate(
FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE))
return -EOPNOTSUPP;
- xfs_ilock(ip, XFS_IOLOCK_EXCL);
+ xfs_ilock(ip, iolock);
+ error = xfs_break_layouts(inode, &iolock);
+ if (error)
+ goto out_unlock;
+
if (mode & FALLOC_FL_PUNCH_HOLE) {
error = xfs_free_file_space(ip, offset, len);
if (error)
@@ -894,7 +910,7 @@ xfs_file_fallocate(
}
out_unlock:
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ xfs_iunlock(ip, iolock);
return error;
}
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index fba6532efba4..74efe5b760dc 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -602,6 +602,12 @@ xfs_growfs_data(
if (!mutex_trylock(&mp->m_growlock))
return -EWOULDBLOCK;
error = xfs_growfs_data_private(mp, in);
+ /*
+ * Increment the generation unconditionally, the error could be from
+ * updating the secondary superblocks, in which case the new size
+ * is live already.
+ */
+ mp->m_generation++;
mutex_unlock(&mp->m_growlock);
return error;
}
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index daafa1f6d260..6163767aa856 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2867,6 +2867,10 @@ xfs_rename(
* Handle RENAME_EXCHANGE flags
*/
if (flags & RENAME_EXCHANGE) {
+ if (target_ip == NULL) {
+ error = -EINVAL;
+ goto error_return;
+ }
error = xfs_cross_rename(tp, src_dp, src_name, src_ip,
target_dp, target_name, target_ip,
&free_list, &first_block, spaceres);
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 86cd6b39bed7..a1cd55f3f351 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -384,10 +384,11 @@ enum xfs_prealloc_flags {
XFS_PREALLOC_INVISIBLE = (1 << 4),
};
-int xfs_update_prealloc_flags(struct xfs_inode *,
- enum xfs_prealloc_flags);
-int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t);
-int xfs_iozero(struct xfs_inode *, loff_t, size_t);
+int xfs_update_prealloc_flags(struct xfs_inode *ip,
+ enum xfs_prealloc_flags flags);
+int xfs_zero_eof(struct xfs_inode *ip, xfs_off_t offset,
+ xfs_fsize_t isize, bool *did_zeroing);
+int xfs_iozero(struct xfs_inode *ip, loff_t pos, size_t count);
#define IHOLD(ip) \
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index f7afb86c9148..ac4feae45eb3 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -39,6 +39,7 @@
#include "xfs_icache.h"
#include "xfs_symlink.h"
#include "xfs_trans.h"
+#include "xfs_pnfs.h"
#include <linux/capability.h>
#include <linux/dcache.h>
@@ -286,7 +287,7 @@ xfs_readlink_by_handle(
return PTR_ERR(dentry);
/* Restrict this handle operation to symlinks only. */
- if (!S_ISLNK(dentry->d_inode->i_mode)) {
+ if (!d_is_symlink(dentry)) {
error = -EINVAL;
goto out_dput;
}
@@ -608,6 +609,7 @@ xfs_ioc_space(
{
struct iattr iattr;
enum xfs_prealloc_flags flags = 0;
+ uint iolock = XFS_IOLOCK_EXCL;
int error;
/*
@@ -636,7 +638,10 @@ xfs_ioc_space(
if (error)
return error;
- xfs_ilock(ip, XFS_IOLOCK_EXCL);
+ xfs_ilock(ip, iolock);
+ error = xfs_break_layouts(inode, &iolock);
+ if (error)
+ goto out_unlock;
switch (bf->l_whence) {
case 0: /*SEEK_SET*/
@@ -725,7 +730,7 @@ xfs_ioc_space(
error = xfs_update_prealloc_flags(ip, flags);
out_unlock:
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ xfs_iunlock(ip, iolock);
mnt_drop_write_file(filp);
return error;
}
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index ce80eeb8faa4..e53a90331422 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -37,6 +37,7 @@
#include "xfs_da_btree.h"
#include "xfs_dir2.h"
#include "xfs_trans_space.h"
+#include "xfs_pnfs.h"
#include <linux/capability.h>
#include <linux/xattr.h>
@@ -505,7 +506,7 @@ xfs_setattr_mode(
inode->i_mode |= mode & ~S_IFMT;
}
-static void
+void
xfs_setattr_time(
struct xfs_inode *ip,
struct iattr *iattr)
@@ -750,6 +751,7 @@ xfs_setattr_size(
int error;
uint lock_flags = 0;
uint commit_flags = 0;
+ bool did_zeroing = false;
trace_xfs_setattr(ip);
@@ -793,20 +795,16 @@ xfs_setattr_size(
return error;
/*
- * Now we can make the changes. Before we join the inode to the
- * transaction, take care of the part of the truncation that must be
- * done without the inode lock. This needs to be done before joining
- * the inode to the transaction, because the inode cannot be unlocked
- * once it is a part of the transaction.
+ * File data changes must be complete before we start the transaction to
+ * modify the inode. This needs to be done before joining the inode to
+ * the transaction because the inode cannot be unlocked once it is a
+ * part of the transaction.
+ *
+ * Start with zeroing any data block beyond EOF that we may expose on
+ * file extension.
*/
if (newsize > oldsize) {
- /*
- * Do the first part of growing a file: zero any data in the
- * last block that is beyond the old EOF. We need to do this
- * before the inode is joined to the transaction to modify
- * i_size.
- */
- error = xfs_zero_eof(ip, newsize, oldsize);
+ error = xfs_zero_eof(ip, newsize, oldsize, &did_zeroing);
if (error)
return error;
}
@@ -816,23 +814,18 @@ xfs_setattr_size(
* any previous writes that are beyond the on disk EOF and the new
* EOF that have not been written out need to be written here. If we
* do not write the data out, we expose ourselves to the null files
- * problem.
- *
- * Only flush from the on disk size to the smaller of the in memory
- * file size or the new size as that's the range we really care about
- * here and prevents waiting for other data not within the range we
- * care about here.
+ * problem. Note that this includes any block zeroing we did above;
+ * otherwise those blocks may not be zeroed after a crash.
*/
- if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) {
+ if (newsize > ip->i_d.di_size &&
+ (oldsize != ip->i_d.di_size || did_zeroing)) {
error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
ip->i_d.di_size, newsize);
if (error)
return error;
}
- /*
- * Wait for all direct I/O to complete.
- */
+ /* Now wait for all direct I/O to complete. */
inode_dio_wait(inode);
/*
@@ -979,9 +972,13 @@ xfs_vn_setattr(
int error;
if (iattr->ia_valid & ATTR_SIZE) {
- xfs_ilock(ip, XFS_IOLOCK_EXCL);
- error = xfs_setattr_size(ip, iattr);
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ uint iolock = XFS_IOLOCK_EXCL;
+
+ xfs_ilock(ip, iolock);
+ error = xfs_break_layouts(dentry->d_inode, &iolock);
+ if (!error)
+ error = xfs_setattr_size(ip, iattr);
+ xfs_iunlock(ip, iolock);
} else {
error = xfs_setattr_nonsize(ip, iattr, 0);
}
diff --git a/fs/xfs/xfs_iops.h b/fs/xfs/xfs_iops.h
index 1c34e4335920..ea7a98e9cb70 100644
--- a/fs/xfs/xfs_iops.h
+++ b/fs/xfs/xfs_iops.h
@@ -32,6 +32,7 @@ extern void xfs_setup_inode(struct xfs_inode *);
*/
#define XFS_ATTR_NOACL 0x01 /* Don't call posix_acl_chmod */
+extern void xfs_setattr_time(struct xfs_inode *ip, struct iattr *iattr);
extern int xfs_setattr_nonsize(struct xfs_inode *ip, struct iattr *vap,
int flags);
extern int xfs_setattr_size(struct xfs_inode *ip, struct iattr *vap);
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index a5b2ff822653..0d8abd6364d9 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -174,6 +174,17 @@ typedef struct xfs_mount {
struct workqueue_struct *m_reclaim_workqueue;
struct workqueue_struct *m_log_workqueue;
struct workqueue_struct *m_eofblocks_workqueue;
+
+ /*
+ * Generation of the filesysyem layout. This is incremented by each
+ * growfs, and used by the pNFS server to ensure the client updates
+ * its view of the block device once it gets a layout that might
+ * reference the newly added blocks. Does not need to be persistent
+ * as long as we only allow file system size increments, but if we
+ * ever support shrinks it would have to be persisted in addition
+ * to various other kinds of pain inflicted on the pNFS server.
+ */
+ __uint32_t m_generation;
} xfs_mount_t;
/*
diff --git a/fs/xfs/xfs_pnfs.c b/fs/xfs/xfs_pnfs.c
new file mode 100644
index 000000000000..365dd57ea760
--- /dev/null
+++ b/fs/xfs/xfs_pnfs.c
@@ -0,0 +1,324 @@
+/*
+ * Copyright (c) 2014 Christoph Hellwig.
+ */
+#include "xfs.h"
+#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
+#include "xfs_sb.h"
+#include "xfs_mount.h"
+#include "xfs_inode.h"
+#include "xfs_trans.h"
+#include "xfs_log.h"
+#include "xfs_bmap.h"
+#include "xfs_bmap_util.h"
+#include "xfs_error.h"
+#include "xfs_iomap.h"
+#include "xfs_shared.h"
+#include "xfs_bit.h"
+#include "xfs_pnfs.h"
+
+/*
+ * Ensure that we do not have any outstanding pNFS layouts that can be used by
+ * clients to directly read from or write to this inode. This must be called
+ * before every operation that can remove blocks from the extent map.
+ * Additionally we call it during the write operation, where aren't concerned
+ * about exposing unallocated blocks but just want to provide basic
+ * synchronization between a local writer and pNFS clients. mmap writes would
+ * also benefit from this sort of synchronization, but due to the tricky locking
+ * rules in the page fault path we don't bother.
+ */
+int
+xfs_break_layouts(
+ struct inode *inode,
+ uint *iolock)
+{
+ struct xfs_inode *ip = XFS_I(inode);
+ int error;
+
+ ASSERT(xfs_isilocked(ip, XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL));
+
+ while ((error = break_layout(inode, false) == -EWOULDBLOCK)) {
+ xfs_iunlock(ip, *iolock);
+ error = break_layout(inode, true);
+ *iolock = XFS_IOLOCK_EXCL;
+ xfs_ilock(ip, *iolock);
+ }
+
+ return error;
+}
+
+/*
+ * Get a unique ID including its location so that the client can identify
+ * the exported device.
+ */
+int
+xfs_fs_get_uuid(
+ struct super_block *sb,
+ u8 *buf,
+ u32 *len,
+ u64 *offset)
+{
+ struct xfs_mount *mp = XFS_M(sb);
+
+ printk_once(KERN_NOTICE
+"XFS (%s): using experimental pNFS feature, use at your own risk!\n",
+ mp->m_fsname);
+
+ if (*len < sizeof(uuid_t))
+ return -EINVAL;
+
+ memcpy(buf, &mp->m_sb.sb_uuid, sizeof(uuid_t));
+ *len = sizeof(uuid_t);
+ *offset = offsetof(struct xfs_dsb, sb_uuid);
+ return 0;
+}
+
+static void
+xfs_bmbt_to_iomap(
+ struct xfs_inode *ip,
+ struct iomap *iomap,
+ struct xfs_bmbt_irec *imap)
+{
+ struct xfs_mount *mp = ip->i_mount;
+
+ if (imap->br_startblock == HOLESTARTBLOCK) {
+ iomap->blkno = IOMAP_NULL_BLOCK;
+ iomap->type = IOMAP_HOLE;
+ } else if (imap->br_startblock == DELAYSTARTBLOCK) {
+ iomap->blkno = IOMAP_NULL_BLOCK;
+ iomap->type = IOMAP_DELALLOC;
+ } else {
+ iomap->blkno =
+ XFS_FSB_TO_DADDR(ip->i_mount, imap->br_startblock);
+ if (imap->br_state == XFS_EXT_UNWRITTEN)
+ iomap->type = IOMAP_UNWRITTEN;
+ else
+ iomap->type = IOMAP_MAPPED;
+ }
+ iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff);
+ iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount);
+}
+
+/*
+ * Get a layout for the pNFS client.
+ */
+int
+xfs_fs_map_blocks(
+ struct inode *inode,
+ loff_t offset,
+ u64 length,
+ struct iomap *iomap,
+ bool write,
+ u32 *device_generation)
+{
+ struct xfs_inode *ip = XFS_I(inode);
+ struct xfs_mount *mp = ip->i_mount;
+ struct xfs_bmbt_irec imap;
+ xfs_fileoff_t offset_fsb, end_fsb;
+ loff_t limit;
+ int bmapi_flags = XFS_BMAPI_ENTIRE;
+ int nimaps = 1;
+ uint lock_flags;
+ int error = 0;
+
+ if (XFS_FORCED_SHUTDOWN(mp))
+ return -EIO;
+
+ /*
+ * We can't export inodes residing on the realtime device. The realtime
+ * device doesn't have a UUID to identify it, so the client has no way
+ * to find it.
+ */
+ if (XFS_IS_REALTIME_INODE(ip))
+ return -ENXIO;
+
+ /*
+ * Lock out any other I/O before we flush and invalidate the pagecache,
+ * and then hand out a layout to the remote system. This is very
+ * similar to direct I/O, except that the synchronization is much more
+ * complicated. See the comment near xfs_break_layouts for a detailed
+ * explanation.
+ */
+ xfs_ilock(ip, XFS_IOLOCK_EXCL);
+
+ error = -EINVAL;
+ limit = mp->m_super->s_maxbytes;
+ if (!write)
+ limit = max(limit, round_up(i_size_read(inode),
+ inode->i_sb->s_blocksize));
+ if (offset > limit)
+ goto out_unlock;
+ if (offset > limit - length)
+ length = limit - offset;
+
+ error = filemap_write_and_wait(inode->i_mapping);
+ if (error)
+ goto out_unlock;
+ error = invalidate_inode_pages2(inode->i_mapping);
+ if (WARN_ON_ONCE(error))
+ return error;
+
+ end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + length);
+ offset_fsb = XFS_B_TO_FSBT(mp, offset);
+
+ lock_flags = xfs_ilock_data_map_shared(ip);
+ error = xfs_bmapi_read(ip, offset_fsb, end_fsb - offset_fsb,
+ &imap, &nimaps, bmapi_flags);
+ xfs_iunlock(ip, lock_flags);
+
+ if (error)
+ goto out_unlock;
+
+ if (write) {
+ enum xfs_prealloc_flags flags = 0;
+
+ ASSERT(imap.br_startblock != DELAYSTARTBLOCK);
+
+ if (!nimaps || imap.br_startblock == HOLESTARTBLOCK) {
+ error = xfs_iomap_write_direct(ip, offset, length,
+ &imap, nimaps);
+ if (error)
+ goto out_unlock;
+
+ /*
+ * Ensure the next transaction is committed
+ * synchronously so that the blocks allocated and
+ * handed out to the client are guaranteed to be
+ * present even after a server crash.
+ */
+ flags |= XFS_PREALLOC_SET | XFS_PREALLOC_SYNC;
+ }
+
+ error = xfs_update_prealloc_flags(ip, flags);
+ if (error)
+ goto out_unlock;
+ }
+ xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+
+ xfs_bmbt_to_iomap(ip, iomap, &imap);
+ *device_generation = mp->m_generation;
+ return error;
+out_unlock:
+ xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ return error;
+}
+
+/*
+ * Ensure the size update falls into a valid allocated block.
+ */
+static int
+xfs_pnfs_validate_isize(
+ struct xfs_inode *ip,
+ xfs_off_t isize)
+{
+ struct xfs_bmbt_irec imap;
+ int nimaps = 1;
+ int error = 0;
+
+ xfs_ilock(ip, XFS_ILOCK_SHARED);
+ error = xfs_bmapi_read(ip, XFS_B_TO_FSBT(ip->i_mount, isize - 1), 1,
+ &imap, &nimaps, 0);
+ xfs_iunlock(ip, XFS_ILOCK_SHARED);
+ if (error)
+ return error;
+
+ if (imap.br_startblock == HOLESTARTBLOCK ||
+ imap.br_startblock == DELAYSTARTBLOCK ||
+ imap.br_state == XFS_EXT_UNWRITTEN)
+ return -EIO;
+ return 0;
+}
+
+/*
+ * Make sure the blocks described by maps are stable on disk. This includes
+ * converting any unwritten extents, flushing the disk cache and updating the
+ * time stamps.
+ *
+ * Note that we rely on the caller to always send us a timestamp update so that
+ * we always commit a transaction here. If that stops being true we will have
+ * to manually flush the cache here similar to what the fsync code path does
+ * for datasyncs on files that have no dirty metadata.
+ */
+int
+xfs_fs_commit_blocks(
+ struct inode *inode,
+ struct iomap *maps,
+ int nr_maps,
+ struct iattr *iattr)
+{
+ struct xfs_inode *ip = XFS_I(inode);
+ struct xfs_mount *mp = ip->i_mount;
+ struct xfs_trans *tp;
+ bool update_isize = false;
+ int error, i;
+ loff_t size;
+
+ ASSERT(iattr->ia_valid & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME));
+
+ xfs_ilock(ip, XFS_IOLOCK_EXCL);
+
+ size = i_size_read(inode);
+ if ((iattr->ia_valid & ATTR_SIZE) && iattr->ia_size > size) {
+ update_isize = true;
+ size = iattr->ia_size;
+ }
+
+ for (i = 0; i < nr_maps; i++) {
+ u64 start, length, end;
+
+ start = maps[i].offset;
+ if (start > size)
+ continue;
+
+ end = start + maps[i].length;
+ if (end > size)
+ end = size;
+
+ length = end - start;
+ if (!length)
+ continue;
+
+ /*
+ * Make sure reads through the pagecache see the new data.
+ */
+ error = invalidate_inode_pages2_range(inode->i_mapping,
+ start >> PAGE_CACHE_SHIFT,
+ (end - 1) >> PAGE_CACHE_SHIFT);
+ WARN_ON_ONCE(error);
+
+ error = xfs_iomap_write_unwritten(ip, start, length);
+ if (error)
+ goto out_drop_iolock;
+ }
+
+ if (update_isize) {
+ error = xfs_pnfs_validate_isize(ip, size);
+ if (error)
+ goto out_drop_iolock;
+ }
+
+ tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
+ error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ goto out_drop_iolock;
+ }
+
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+ xfs_setattr_time(ip, iattr);
+ if (update_isize) {
+ i_size_write(inode, iattr->ia_size);
+ ip->i_d.di_size = iattr->ia_size;
+ }
+
+ xfs_trans_set_sync(tp);
+ error = xfs_trans_commit(tp, 0);
+
+out_drop_iolock:
+ xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ return error;
+}
diff --git a/fs/xfs/xfs_pnfs.h b/fs/xfs/xfs_pnfs.h
new file mode 100644
index 000000000000..b7fbfce660f6
--- /dev/null
+++ b/fs/xfs/xfs_pnfs.h
@@ -0,0 +1,18 @@
+#ifndef _XFS_PNFS_H
+#define _XFS_PNFS_H 1
+
+#ifdef CONFIG_NFSD_PNFS
+int xfs_fs_get_uuid(struct super_block *sb, u8 *buf, u32 *len, u64 *offset);
+int xfs_fs_map_blocks(struct inode *inode, loff_t offset, u64 length,
+ struct iomap *iomap, bool write, u32 *device_generation);
+int xfs_fs_commit_blocks(struct inode *inode, struct iomap *maps, int nr_maps,
+ struct iattr *iattr);
+
+int xfs_break_layouts(struct inode *inode, uint *iolock);
+#else
+static inline int xfs_break_layouts(struct inode *inode, uint *iolock)
+{
+ return 0;
+}
+#endif /* CONFIG_NFSD_PNFS */
+#endif /* _XFS_PNFS_H */
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index 53cc2aaf8d2b..fbbb9e62e274 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -836,6 +836,11 @@ xfs_qm_reset_dqcounts(
*/
xfs_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR,
"xfs_quotacheck");
+ /*
+ * Reset type in case we are reusing group quota file for
+ * project quotas or vice versa
+ */
+ ddq->d_flags = type;
ddq->d_bcount = 0;
ddq->d_icount = 0;
ddq->d_rtbcount = 0;
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-29 03:53:01 +0000