diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/Makefile | 1 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_log_format.h | 42 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_log_recover.h | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_exchmaps_item.c | 235 | ||||
| -rw-r--r-- | fs/xfs/xfs_exchmaps_item.h | 59 | ||||
| -rw-r--r-- | fs/xfs/xfs_log_recover.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_super.c | 19 |
7 files changed, 357 insertions, 3 deletions
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 2474242f5a05..68ca9726e7b7 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -102,6 +102,7 @@ xfs-y += xfs_log.o \ xfs_buf_item.o \ xfs_buf_item_recover.o \ xfs_dquot_item_recover.o \ + xfs_exchmaps_item.o \ xfs_extfree_item.o \ xfs_attr_item.o \ xfs_icreate_item.o \ diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h index 16872972e1e9..09024431cae9 100644 --- a/fs/xfs/libxfs/xfs_log_format.h +++ b/fs/xfs/libxfs/xfs_log_format.h @@ -117,8 +117,9 @@ struct xfs_unmount_log_format { #define XLOG_REG_TYPE_ATTRD_FORMAT 28 #define XLOG_REG_TYPE_ATTR_NAME 29 #define XLOG_REG_TYPE_ATTR_VALUE 30 -#define XLOG_REG_TYPE_MAX 30 - +#define XLOG_REG_TYPE_XMI_FORMAT 31 +#define XLOG_REG_TYPE_XMD_FORMAT 32 +#define XLOG_REG_TYPE_MAX 32 /* * Flags to log operation header @@ -243,6 +244,8 @@ typedef struct xfs_trans_header { #define XFS_LI_BUD 0x1245 #define XFS_LI_ATTRI 0x1246 /* attr set/remove intent*/ #define XFS_LI_ATTRD 0x1247 /* attr set/remove done */ +#define XFS_LI_XMI 0x1248 /* mapping exchange intent */ +#define XFS_LI_XMD 0x1249 /* mapping exchange done */ #define XFS_LI_TYPE_DESC \ { XFS_LI_EFI, "XFS_LI_EFI" }, \ @@ -260,7 +263,9 @@ typedef struct xfs_trans_header { { XFS_LI_BUI, "XFS_LI_BUI" }, \ { XFS_LI_BUD, "XFS_LI_BUD" }, \ { XFS_LI_ATTRI, "XFS_LI_ATTRI" }, \ - { XFS_LI_ATTRD, "XFS_LI_ATTRD" } + { XFS_LI_ATTRD, "XFS_LI_ATTRD" }, \ + { XFS_LI_XMI, "XFS_LI_XMI" }, \ + { XFS_LI_XMD, "XFS_LI_XMD" } /* * Inode Log Item Format definitions. @@ -879,6 +884,37 @@ struct xfs_bud_log_format { }; /* + * XMI/XMD (file mapping exchange) log format definitions + */ + +/* This is the structure used to lay out an mapping exchange log item. */ +struct xfs_xmi_log_format { + uint16_t xmi_type; /* xmi log item type */ + uint16_t xmi_size; /* size of this item */ + uint32_t __pad; /* must be zero */ + uint64_t xmi_id; /* xmi identifier */ + + uint64_t xmi_inode1; /* inumber of first file */ + uint64_t xmi_inode2; /* inumber of second file */ + uint64_t xmi_startoff1; /* block offset into file1 */ + uint64_t xmi_startoff2; /* block offset into file2 */ + uint64_t xmi_blockcount; /* number of blocks */ + uint64_t xmi_flags; /* XFS_EXCHMAPS_* */ + uint64_t xmi_isize1; /* intended file1 size */ + uint64_t xmi_isize2; /* intended file2 size */ +}; + +#define XFS_EXCHMAPS_LOGGED_FLAGS (0) + +/* This is the structure used to lay out an mapping exchange done log item. */ +struct xfs_xmd_log_format { + uint16_t xmd_type; /* xmd log item type */ + uint16_t xmd_size; /* size of this item */ + uint32_t __pad; + uint64_t xmd_xmi_id; /* id of corresponding xmi */ +}; + +/* * Dquot Log format definitions. * * The first two fields must be the type and size fitting into diff --git a/fs/xfs/libxfs/xfs_log_recover.h b/fs/xfs/libxfs/xfs_log_recover.h index 9fe7a9564bca..47b758b49cb3 100644 --- a/fs/xfs/libxfs/xfs_log_recover.h +++ b/fs/xfs/libxfs/xfs_log_recover.h @@ -75,6 +75,8 @@ extern const struct xlog_recover_item_ops xlog_cui_item_ops; extern const struct xlog_recover_item_ops xlog_cud_item_ops; extern const struct xlog_recover_item_ops xlog_attri_item_ops; extern const struct xlog_recover_item_ops xlog_attrd_item_ops; +extern const struct xlog_recover_item_ops xlog_xmi_item_ops; +extern const struct xlog_recover_item_ops xlog_xmd_item_ops; /* * Macros, structures, prototypes for internal log manager use. diff --git a/fs/xfs/xfs_exchmaps_item.c b/fs/xfs/xfs_exchmaps_item.c new file mode 100644 index 000000000000..65b0ade41b3d --- /dev/null +++ b/fs/xfs/xfs_exchmaps_item.c @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2020-2024 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_format.h" +#include "xfs_log_format.h" +#include "xfs_trans_resv.h" +#include "xfs_bit.h" +#include "xfs_shared.h" +#include "xfs_mount.h" +#include "xfs_defer.h" +#include "xfs_inode.h" +#include "xfs_trans.h" +#include "xfs_trans_priv.h" +#include "xfs_exchmaps_item.h" +#include "xfs_log.h" +#include "xfs_bmap.h" +#include "xfs_icache.h" +#include "xfs_trans_space.h" +#include "xfs_error.h" +#include "xfs_log_priv.h" +#include "xfs_log_recover.h" + +struct kmem_cache *xfs_xmi_cache; +struct kmem_cache *xfs_xmd_cache; + +static const struct xfs_item_ops xfs_xmi_item_ops; + +static inline struct xfs_xmi_log_item *XMI_ITEM(struct xfs_log_item *lip) +{ + return container_of(lip, struct xfs_xmi_log_item, xmi_item); +} + +STATIC void +xfs_xmi_item_free( + struct xfs_xmi_log_item *xmi_lip) +{ + kvfree(xmi_lip->xmi_item.li_lv_shadow); + kmem_cache_free(xfs_xmi_cache, xmi_lip); +} + +/* + * Freeing the XMI requires that we remove it from the AIL if it has already + * been placed there. However, the XMI may not yet have been placed in the AIL + * when called by xfs_xmi_release() from XMD processing due to the ordering of + * committed vs unpin operations in bulk insert operations. Hence the reference + * count to ensure only the last caller frees the XMI. + */ +STATIC void +xfs_xmi_release( + struct xfs_xmi_log_item *xmi_lip) +{ + ASSERT(atomic_read(&xmi_lip->xmi_refcount) > 0); + if (atomic_dec_and_test(&xmi_lip->xmi_refcount)) { + xfs_trans_ail_delete(&xmi_lip->xmi_item, 0); + xfs_xmi_item_free(xmi_lip); + } +} + + +STATIC void +xfs_xmi_item_size( + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) +{ + *nvecs += 1; + *nbytes += sizeof(struct xfs_xmi_log_format); +} + +/* + * This is called to fill in the vector of log iovecs for the given xmi log + * item. We use only 1 iovec, and we point that at the xmi_log_format structure + * embedded in the xmi item. + */ +STATIC void +xfs_xmi_item_format( + struct xfs_log_item *lip, + struct xfs_log_vec *lv) +{ + struct xfs_xmi_log_item *xmi_lip = XMI_ITEM(lip); + struct xfs_log_iovec *vecp = NULL; + + xmi_lip->xmi_format.xmi_type = XFS_LI_XMI; + xmi_lip->xmi_format.xmi_size = 1; + + xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_XMI_FORMAT, + &xmi_lip->xmi_format, + sizeof(struct xfs_xmi_log_format)); +} + +/* + * The unpin operation is the last place an XMI is manipulated in the log. It + * is either inserted in the AIL or aborted in the event of a log I/O error. In + * either case, the XMI transaction has been successfully committed to make it + * this far. Therefore, we expect whoever committed the XMI to either construct + * and commit the XMD or drop the XMD's reference in the event of error. Simply + * drop the log's XMI reference now that the log is done with it. + */ +STATIC void +xfs_xmi_item_unpin( + struct xfs_log_item *lip, + int remove) +{ + struct xfs_xmi_log_item *xmi_lip = XMI_ITEM(lip); + + xfs_xmi_release(xmi_lip); +} + +/* + * The XMI has been either committed or aborted if the transaction has been + * cancelled. If the transaction was cancelled, an XMD isn't going to be + * constructed and thus we free the XMI here directly. + */ +STATIC void +xfs_xmi_item_release( + struct xfs_log_item *lip) +{ + xfs_xmi_release(XMI_ITEM(lip)); +} + +/* Allocate and initialize an xmi item. */ +STATIC struct xfs_xmi_log_item * +xfs_xmi_init( + struct xfs_mount *mp) + +{ + struct xfs_xmi_log_item *xmi_lip; + + xmi_lip = kmem_cache_zalloc(xfs_xmi_cache, GFP_KERNEL | __GFP_NOFAIL); + + xfs_log_item_init(mp, &xmi_lip->xmi_item, XFS_LI_XMI, &xfs_xmi_item_ops); + xmi_lip->xmi_format.xmi_id = (uintptr_t)(void *)xmi_lip; + atomic_set(&xmi_lip->xmi_refcount, 2); + + return xmi_lip; +} + +static inline struct xfs_xmd_log_item *XMD_ITEM(struct xfs_log_item *lip) +{ + return container_of(lip, struct xfs_xmd_log_item, xmd_item); +} + +STATIC bool +xfs_xmi_item_match( + struct xfs_log_item *lip, + uint64_t intent_id) +{ + return XMI_ITEM(lip)->xmi_format.xmi_id == intent_id; +} + +static const struct xfs_item_ops xfs_xmi_item_ops = { + .flags = XFS_ITEM_INTENT, + .iop_size = xfs_xmi_item_size, + .iop_format = xfs_xmi_item_format, + .iop_unpin = xfs_xmi_item_unpin, + .iop_release = xfs_xmi_item_release, + .iop_match = xfs_xmi_item_match, +}; + +/* + * This routine is called to create an in-core file mapping exchange item from + * the xmi format structure which was logged on disk. It allocates an in-core + * xmi, copies the exchange information from the format structure into it, and + * adds the xmi to the AIL with the given LSN. + */ +STATIC int +xlog_recover_xmi_commit_pass2( + struct xlog *log, + struct list_head *buffer_list, + struct xlog_recover_item *item, + xfs_lsn_t lsn) +{ + struct xfs_mount *mp = log->l_mp; + struct xfs_xmi_log_item *xmi_lip; + struct xfs_xmi_log_format *xmi_formatp; + size_t len; + + len = sizeof(struct xfs_xmi_log_format); + if (item->ri_buf[0].i_len != len) { + XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, log->l_mp); + return -EFSCORRUPTED; + } + + xmi_formatp = item->ri_buf[0].i_addr; + if (xmi_formatp->__pad != 0) { + XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, log->l_mp); + return -EFSCORRUPTED; + } + + xmi_lip = xfs_xmi_init(mp); + memcpy(&xmi_lip->xmi_format, xmi_formatp, len); + + /* not implemented yet */ + return -EIO; +} + +const struct xlog_recover_item_ops xlog_xmi_item_ops = { + .item_type = XFS_LI_XMI, + .commit_pass2 = xlog_recover_xmi_commit_pass2, +}; + +/* + * This routine is called when an XMD format structure is found in a committed + * transaction in the log. Its purpose is to cancel the corresponding XMI if it + * was still in the log. To do this it searches the AIL for the XMI with an id + * equal to that in the XMD format structure. If we find it we drop the XMD + * reference, which removes the XMI from the AIL and frees it. + */ +STATIC int +xlog_recover_xmd_commit_pass2( + struct xlog *log, + struct list_head *buffer_list, + struct xlog_recover_item *item, + xfs_lsn_t lsn) +{ + struct xfs_xmd_log_format *xmd_formatp; + + xmd_formatp = item->ri_buf[0].i_addr; + if (item->ri_buf[0].i_len != sizeof(struct xfs_xmd_log_format)) { + XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, log->l_mp); + return -EFSCORRUPTED; + } + + xlog_recover_release_intent(log, XFS_LI_XMI, xmd_formatp->xmd_xmi_id); + return 0; +} + +const struct xlog_recover_item_ops xlog_xmd_item_ops = { + .item_type = XFS_LI_XMD, + .commit_pass2 = xlog_recover_xmd_commit_pass2, +}; diff --git a/fs/xfs/xfs_exchmaps_item.h b/fs/xfs/xfs_exchmaps_item.h new file mode 100644 index 000000000000..ada1eb314e65 --- /dev/null +++ b/fs/xfs/xfs_exchmaps_item.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (c) 2020-2024 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#ifndef __XFS_EXCHMAPS_ITEM_H__ +#define __XFS_EXCHMAPS_ITEM_H__ + +/* + * The file mapping exchange intent item helps us exchange multiple file + * mappings between two inode forks. It does this by tracking the range of + * file block offsets that still need to be exchanged, and relogs as progress + * happens. + * + * *I items should be recorded in the *first* of a series of rolled + * transactions, and the *D items should be recorded in the same transaction + * that records the associated bmbt updates. + * + * Should the system crash after the commit of the first transaction but + * before the commit of the final transaction in a series, log recovery will + * use the redo information recorded by the intent items to replay the + * rest of the mapping exchanges. + */ + +/* kernel only XMI/XMD definitions */ + +struct xfs_mount; +struct kmem_cache; + +/* + * This is the incore file mapping exchange intent log item. It is used to log + * the fact that we are exchanging mappings between two files. It is used in + * conjunction with the incore file mapping exchange done log item described + * below. + * + * These log items follow the same rules as struct xfs_efi_log_item; see the + * comments about that structure (in xfs_extfree_item.h) for more details. + */ +struct xfs_xmi_log_item { + struct xfs_log_item xmi_item; + atomic_t xmi_refcount; + struct xfs_xmi_log_format xmi_format; +}; + +/* + * This is the incore file mapping exchange done log item. It is used to log + * the fact that an exchange mentioned in an earlier xmi item have been + * performed. + */ +struct xfs_xmd_log_item { + struct xfs_log_item xmd_item; + struct xfs_xmi_log_item *xmd_intent_log_item; + struct xfs_xmd_log_format xmd_format; +}; + +extern struct kmem_cache *xfs_xmi_cache; +extern struct kmem_cache *xfs_xmd_cache; + +#endif /* __XFS_EXCHMAPS_ITEM_H__ */ diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 41aec991433c..1e5ba95adf2c 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1789,6 +1789,8 @@ static const struct xlog_recover_item_ops *xlog_recover_item_ops[] = { &xlog_bud_item_ops, &xlog_attri_item_ops, &xlog_attrd_item_ops, + &xlog_xmi_item_ops, + &xlog_xmd_item_ops, }; static const struct xlog_recover_item_ops * diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index dbda72df3419..5c9ba974252d 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -43,6 +43,7 @@ #include "xfs_iunlink_item.h" #include "xfs_dahash_test.h" #include "xfs_rtbitmap.h" +#include "xfs_exchmaps_item.h" #include "scrub/stats.h" #include "scrub/rcbag_btree.h" @@ -2189,8 +2190,24 @@ xfs_init_caches(void) if (!xfs_iunlink_cache) goto out_destroy_attri_cache; + xfs_xmd_cache = kmem_cache_create("xfs_xmd_item", + sizeof(struct xfs_xmd_log_item), + 0, 0, NULL); + if (!xfs_xmd_cache) + goto out_destroy_iul_cache; + + xfs_xmi_cache = kmem_cache_create("xfs_xmi_item", + sizeof(struct xfs_xmi_log_item), + 0, 0, NULL); + if (!xfs_xmi_cache) + goto out_destroy_xmd_cache; + return 0; + out_destroy_xmd_cache: + kmem_cache_destroy(xfs_xmd_cache); + out_destroy_iul_cache: + kmem_cache_destroy(xfs_iunlink_cache); out_destroy_attri_cache: kmem_cache_destroy(xfs_attri_cache); out_destroy_attrd_cache: @@ -2247,6 +2264,8 @@ xfs_destroy_caches(void) * destroy caches. */ rcu_barrier(); + kmem_cache_destroy(xfs_xmd_cache); + kmem_cache_destroy(xfs_xmi_cache); kmem_cache_destroy(xfs_iunlink_cache); kmem_cache_destroy(xfs_attri_cache); kmem_cache_destroy(xfs_attrd_cache); |