[PATCH 07/49] xfs: split out on-disk transaction definitions

Dave Chinner
2013-07-19T06:26:02Z

From: Dave Chinner <dchinner@redhat.com>

There's a bunch of definitions in xfs_trans.h that define on-disk
formats - transaction headers taht get written into the log, log
item type definitions, etc. Split out everything into a separate
file so that all which remains in xfs_trans.h are kernel only
definitions.

Also, remove the duplicate magic number definitions for
XFS_TRANS_HEADER_MAGIC...

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
fs/xfs/xfs_log_format.h | 206 ++++++++++++++++++++++++++++++++++++++++++++++++
fs/xfs/xfs_trans.c | 4 +-
fs/xfs/xfs_trans.h | 205 -----------------------------------------------
3 files changed, 208 insertions(+), 207 deletions(-)

diff --git a/fs/xfs/xfs_log_format.h b/fs/xfs/xfs_log_format.h
index 02639c7..faf3f43 100644
--- a/fs/xfs/xfs_log_format.h
+++ b/fs/xfs/xfs_log_format.h
@@ -187,6 +187,212 @@ typedef struct xfs_log_iovec {

/*
+ * Transaction Header definitions.
+ *
+ * This is the structure written in the log at the head of every transaction. It
+ * identifies the type and id of the transaction, and contains the number of
+ * items logged by the transaction so we know how many to expect during
+ * recovery.
+ *
+ * Do not change the below structure without redoing the code in
+ * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
+ */
+typedef struct xfs_trans_header {
+ uint th_magic; /* magic number */
+ uint th_type; /* transaction type */
+ __int32_t th_tid; /* transaction id (unused) */
+ uint th_num_items; /* num items logged by trans */
+} xfs_trans_header_t;
+
+#define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
+
+/*
+ * Log item types.
+ */
+#define XFS_LI_EFI 0x1236
+#define XFS_LI_EFD 0x1237
+#define XFS_LI_IUNLINK 0x1238
+#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
+#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
+#define XFS_LI_DQUOT 0x123d
+#define XFS_LI_QUOTAOFF 0x123e
+#define XFS_LI_ICREATE 0x123f
+
+#define XFS_LI_TYPE_DESC \
+ { XFS_LI_EFI, "XFS_LI_EFI" }, \
+ { XFS_LI_EFD, "XFS_LI_EFD" }, \
+ { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \
+ { XFS_LI_INODE, "XFS_LI_INODE" }, \
+ { XFS_LI_BUF, "XFS_LI_BUF" }, \
+ { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \
+ { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \
+ { XFS_LI_ICREATE, "XFS_LI_ICREATE" }
+
+/*
+ * Transaction types. Used to distinguish types of buffers.
+ */
+#define XFS_TRANS_SETATTR_NOT_SIZE 1
+#define XFS_TRANS_SETATTR_SIZE 2
+#define XFS_TRANS_INACTIVE 3
+#define XFS_TRANS_CREATE 4
+#define XFS_TRANS_CREATE_TRUNC 5
+#define XFS_TRANS_TRUNCATE_FILE 6
+#define XFS_TRANS_REMOVE 7
+#define XFS_TRANS_LINK 8
+#define XFS_TRANS_RENAME 9
+#define XFS_TRANS_MKDIR 10
+#define XFS_TRANS_RMDIR 11
+#define XFS_TRANS_SYMLINK 12
+#define XFS_TRANS_SET_DMATTRS 13
+#define XFS_TRANS_GROWFS 14
+#define XFS_TRANS_STRAT_WRITE 15
+#define XFS_TRANS_DIOSTRAT 16
+/* 17 was XFS_TRANS_WRITE_SYNC */
+#define XFS_TRANS_WRITEID 18
+#define XFS_TRANS_ADDAFORK 19
+#define XFS_TRANS_ATTRINVAL 20
+#define XFS_TRANS_ATRUNCATE 21
+#define XFS_TRANS_ATTR_SET 22
+#define XFS_TRANS_ATTR_RM 23
+#define XFS_TRANS_ATTR_FLAG 24
+#define XFS_TRANS_CLEAR_AGI_BUCKET 25
+#define XFS_TRANS_QM_SBCHANGE 26
+/*
+ * Dummy entries since we use the transaction type to index into the
+ * trans_type[] in xlog_recover_print_trans_head()
+ */
+#define XFS_TRANS_DUMMY1 27
+#define XFS_TRANS_DUMMY2 28
+#define XFS_TRANS_QM_QUOTAOFF 29
+#define XFS_TRANS_QM_DQALLOC 30
+#define XFS_TRANS_QM_SETQLIM 31
+#define XFS_TRANS_QM_DQCLUSTER 32
+#define XFS_TRANS_QM_QINOCREATE 33
+#define XFS_TRANS_QM_QUOTAOFF_END 34
+#define XFS_TRANS_SB_UNIT 35
+#define XFS_TRANS_FSYNC_TS 36
+#define XFS_TRANS_GROWFSRT_ALLOC 37
+#define XFS_TRANS_GROWFSRT_ZERO 38
+#define XFS_TRANS_GROWFSRT_FREE 39
+#define XFS_TRANS_SWAPEXT 40
+#define XFS_TRANS_SB_COUNT 41
+#define XFS_TRANS_CHECKPOINT 42
+#define XFS_TRANS_ICREATE 43
+#define XFS_TRANS_TYPE_MAX 43
+/* new transaction types need to be reflected in xfs_logprint(8) */
+
+#define XFS_TRANS_TYPES \
+ { XFS_TRANS_SETATTR_NOT_SIZE, "SETATTR_NOT_SIZE" }, \
+ { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \
+ { XFS_TRANS_INACTIVE, "INACTIVE" }, \
+ { XFS_TRANS_CREATE, "CREATE" }, \
+ { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \
+ { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \
+ { XFS_TRANS_REMOVE, "REMOVE" }, \
+ { XFS_TRANS_LINK, "LINK" }, \
+ { XFS_TRANS_RENAME, "RENAME" }, \
+ { XFS_TRANS_MKDIR, "MKDIR" }, \
+ { XFS_TRANS_RMDIR, "RMDIR" }, \
+ { XFS_TRANS_SYMLINK, "SYMLINK" }, \
+ { XFS_TRANS_SET_DMATTRS, "SET_DMATTRS" }, \
+ { XFS_TRANS_GROWFS, "GROWFS" }, \
+ { XFS_TRANS_STRAT_WRITE, "STRAT_WRITE" }, \
+ { XFS_TRANS_DIOSTRAT, "DIOSTRAT" }, \
+ { XFS_TRANS_WRITEID, "WRITEID" }, \
+ { XFS_TRANS_ADDAFORK, "ADDAFORK" }, \
+ { XFS_TRANS_ATTRINVAL, "ATTRINVAL" }, \
+ { XFS_TRANS_ATRUNCATE, "ATRUNCATE" }, \
+ { XFS_TRANS_ATTR_SET, "ATTR_SET" }, \
+ { XFS_TRANS_ATTR_RM, "ATTR_RM" }, \
+ { XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \
+ { XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \
+ { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \
+ { XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \
+ { XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \
+ { XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \
+ { XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \
+ { XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \
+ { XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \
+ { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \
+ { XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \
+ { XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \
+ { XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \
+ { XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \
+ { XFS_TRANS_SWAPEXT, "SWAPEXT" }, \
+ { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \
+ { XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \
+ { XFS_TRANS_DUMMY1, "DUMMY1" }, \
+ { XFS_TRANS_DUMMY2, "DUMMY2" }, \
+ { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" }
+
+/*
+ * This structure is used to track log items associated with
+ * a transaction. It points to the log item and keeps some
+ * flags to track the state of the log item. It also tracks
+ * the amount of space needed to log the item it describes
+ * once we get to commit processing (see xfs_trans_commit()).
+ */
+struct xfs_log_item_desc {
+ struct xfs_log_item *lid_item;
+ struct list_head lid_trans;
+ unsigned char lid_flags;
+};
+
+#define XFS_LID_DIRTY 0x1
+
+/*
+ * Values for t_flags.
+ */
+#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */
+#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
+#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
+#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
+#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
+#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
+#define XFS_TRANS_FREEZE_PROT 0x40 /* Transaction has elevated writer
+ count in superblock */
+
+/*
+ * Values for call flags parameter.
+ */
+#define XFS_TRANS_RELEASE_LOG_RES 0x4
+#define XFS_TRANS_ABORT 0x8
+
+/*
+ * Field values for xfs_trans_mod_sb.
+ */
+#define XFS_TRANS_SB_ICOUNT 0x00000001
+#define XFS_TRANS_SB_IFREE 0x00000002
+#define XFS_TRANS_SB_FDBLOCKS 0x00000004
+#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008
+#define XFS_TRANS_SB_FREXTENTS 0x00000010
+#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020
+#define XFS_TRANS_SB_DBLOCKS 0x00000040
+#define XFS_TRANS_SB_AGCOUNT 0x00000080
+#define XFS_TRANS_SB_IMAXPCT 0x00000100
+#define XFS_TRANS_SB_REXTSIZE 0x00000200
+#define XFS_TRANS_SB_RBMBLOCKS 0x00000400
+#define XFS_TRANS_SB_RBLOCKS 0x00000800
+#define XFS_TRANS_SB_REXTENTS 0x00001000
+#define XFS_TRANS_SB_REXTSLOG 0x00002000
+
+/*
+ * Here we centralize the specification of XFS meta-data buffer
+ * reference count values. This determine how hard the buffer
+ * cache tries to hold onto the buffer.
+ */
+#define XFS_AGF_REF 4
+#define XFS_AGI_REF 4
+#define XFS_AGFL_REF 3
+#define XFS_INO_BTREE_REF 3
+#define XFS_ALLOC_BTREE_REF 2
+#define XFS_BMAP_BTREE_REF 2
+#define XFS_DIR_BTREE_REF 2
+#define XFS_INO_REF 2
+#define XFS_ATTR_BTREE_REF 1
+#define XFS_DQUOT_REF 1
+
+/*
* Inode Log Item Format definitions.
*
* This is the structure used to lay out an inode log item in the
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index 1d2a061..9b70df3 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -744,7 +744,7 @@ _xfs_trans_alloc(
atomic_inc(&mp->m_active_trans);

tp = kmem_zone_zalloc(xfs_trans_zone, memflags);
- tp->t_magic = XFS_TRANS_MAGIC;
+ tp->t_magic = XFS_TRANS_HEADER_MAGIC;
tp->t_type = type;
tp->t_mountp = mp;
INIT_LIST_HEAD(&tp->t_items);
@@ -789,7 +789,7 @@ xfs_trans_dup(
/*
* Initialize the new transaction structure.
*/
- ntp->t_magic = XFS_TRANS_MAGIC;
+ ntp->t_magic = XFS_TRANS_HEADER_MAGIC;
ntp->t_type = tp->t_type;
ntp->t_mountp = tp->t_mountp;
INIT_LIST_HEAD(&ntp->t_items);
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 2b49463..ffaa584 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -21,195 +21,6 @@
struct xfs_log_item;

/*
- * This is the structure written in the log at the head of
- * every transaction. It identifies the type and id of the
- * transaction, and contains the number of items logged by
- * the transaction so we know how many to expect during recovery.
- *
- * Do not change the below structure without redoing the code in
- * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
- */
-typedef struct xfs_trans_header {
- uint th_magic; /* magic number */
- uint th_type; /* transaction type */
- __int32_t th_tid; /* transaction id (unused) */
- uint th_num_items; /* num items logged by trans */
-} xfs_trans_header_t;
-
-#define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
-
-/*
- * Log item types.
- */
-#define XFS_LI_EFI 0x1236
-#define XFS_LI_EFD 0x1237
-#define XFS_LI_IUNLINK 0x1238
-#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
-#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
-#define XFS_LI_DQUOT 0x123d
-#define XFS_LI_QUOTAOFF 0x123e
-#define XFS_LI_ICREATE 0x123f
-
-#define XFS_LI_TYPE_DESC \
- { XFS_LI_EFI, "XFS_LI_EFI" }, \
- { XFS_LI_EFD, "XFS_LI_EFD" }, \
- { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \
- { XFS_LI_INODE, "XFS_LI_INODE" }, \
- { XFS_LI_BUF, "XFS_LI_BUF" }, \
- { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \
- { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }
-
-/*
- * Transaction types. Used to distinguish types of buffers.
- */
-#define XFS_TRANS_SETATTR_NOT_SIZE 1
-#define XFS_TRANS_SETATTR_SIZE 2
-#define XFS_TRANS_INACTIVE 3
-#define XFS_TRANS_CREATE 4
-#define XFS_TRANS_CREATE_TRUNC 5
-#define XFS_TRANS_TRUNCATE_FILE 6
-#define XFS_TRANS_REMOVE 7
-#define XFS_TRANS_LINK 8
-#define XFS_TRANS_RENAME 9
-#define XFS_TRANS_MKDIR 10
-#define XFS_TRANS_RMDIR 11
-#define XFS_TRANS_SYMLINK 12
-#define XFS_TRANS_SET_DMATTRS 13
-#define XFS_TRANS_GROWFS 14
-#define XFS_TRANS_STRAT_WRITE 15
-#define XFS_TRANS_DIOSTRAT 16
-/* 17 was XFS_TRANS_WRITE_SYNC */
-#define XFS_TRANS_WRITEID 18
-#define XFS_TRANS_ADDAFORK 19
-#define XFS_TRANS_ATTRINVAL 20
-#define XFS_TRANS_ATRUNCATE 21
-#define XFS_TRANS_ATTR_SET 22
-#define XFS_TRANS_ATTR_RM 23
-#define XFS_TRANS_ATTR_FLAG 24
-#define XFS_TRANS_CLEAR_AGI_BUCKET 25
-#define XFS_TRANS_QM_SBCHANGE 26
-/*
- * Dummy entries since we use the transaction type to index into the
- * trans_type[] in xlog_recover_print_trans_head()
- */
-#define XFS_TRANS_DUMMY1 27
-#define XFS_TRANS_DUMMY2 28
-#define XFS_TRANS_QM_QUOTAOFF 29
-#define XFS_TRANS_QM_DQALLOC 30
-#define XFS_TRANS_QM_SETQLIM 31
-#define XFS_TRANS_QM_DQCLUSTER 32
-#define XFS_TRANS_QM_QINOCREATE 33
-#define XFS_TRANS_QM_QUOTAOFF_END 34
-#define XFS_TRANS_SB_UNIT 35
-#define XFS_TRANS_FSYNC_TS 36
-#define XFS_TRANS_GROWFSRT_ALLOC 37
-#define XFS_TRANS_GROWFSRT_ZERO 38
-#define XFS_TRANS_GROWFSRT_FREE 39
-#define XFS_TRANS_SWAPEXT 40
-#define XFS_TRANS_SB_COUNT 41
-#define XFS_TRANS_CHECKPOINT 42
-#define XFS_TRANS_ICREATE 43
-#define XFS_TRANS_TYPE_MAX 43
-/* new transaction types need to be reflected in xfs_logprint(8) */
-
-#define XFS_TRANS_TYPES \
- { XFS_TRANS_SETATTR_NOT_SIZE, "SETATTR_NOT_SIZE" }, \
- { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \
- { XFS_TRANS_INACTIVE, "INACTIVE" }, \
- { XFS_TRANS_CREATE, "CREATE" }, \
- { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \
- { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \
- { XFS_TRANS_REMOVE, "REMOVE" }, \
- { XFS_TRANS_LINK, "LINK" }, \
- { XFS_TRANS_RENAME, "RENAME" }, \
- { XFS_TRANS_MKDIR, "MKDIR" }, \
- { XFS_TRANS_RMDIR, "RMDIR" }, \
- { XFS_TRANS_SYMLINK, "SYMLINK" }, \
- { XFS_TRANS_SET_DMATTRS, "SET_DMATTRS" }, \
- { XFS_TRANS_GROWFS, "GROWFS" }, \
- { XFS_TRANS_STRAT_WRITE, "STRAT_WRITE" }, \
- { XFS_TRANS_DIOSTRAT, "DIOSTRAT" }, \
- { XFS_TRANS_WRITEID, "WRITEID" }, \
- { XFS_TRANS_ADDAFORK, "ADDAFORK" }, \
- { XFS_TRANS_ATTRINVAL, "ATTRINVAL" }, \
- { XFS_TRANS_ATRUNCATE, "ATRUNCATE" }, \
- { XFS_TRANS_ATTR_SET, "ATTR_SET" }, \
- { XFS_TRANS_ATTR_RM, "ATTR_RM" }, \
- { XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \
- { XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \
- { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \
- { XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \
- { XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \
- { XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \
- { XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \
- { XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \
- { XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \
- { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \
- { XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \
- { XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \
- { XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \
- { XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \
- { XFS_TRANS_SWAPEXT, "SWAPEXT" }, \
- { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \
- { XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \
- { XFS_TRANS_DUMMY1, "DUMMY1" }, \
- { XFS_TRANS_DUMMY2, "DUMMY2" }, \
- { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" }
-
-/*
- * This structure is used to track log items associated with
- * a transaction. It points to the log item and keeps some
- * flags to track the state of the log item. It also tracks
- * the amount of space needed to log the item it describes
- * once we get to commit processing (see xfs_trans_commit()).
- */
-struct xfs_log_item_desc {
- struct xfs_log_item *lid_item;
- struct list_head lid_trans;
- unsigned char lid_flags;
-};
-
-#define XFS_LID_DIRTY 0x1
-
-#define XFS_TRANS_MAGIC 0x5452414E /* 'TRAN' */
-/*
- * Values for t_flags.
- */
-#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */
-#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
-#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
-#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
-#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
-#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
-#define XFS_TRANS_FREEZE_PROT 0x40 /* Transaction has elevated writer
- count in superblock */
-
-/*
- * Values for call flags parameter.
- */
-#define XFS_TRANS_RELEASE_LOG_RES 0x4
-#define XFS_TRANS_ABORT 0x8
-
-/*
- * Field values for xfs_trans_mod_sb.
- */
-#define XFS_TRANS_SB_ICOUNT 0x00000001
-#define XFS_TRANS_SB_IFREE 0x00000002
-#define XFS_TRANS_SB_FDBLOCKS 0x00000004
-#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008
-#define XFS_TRANS_SB_FREXTENTS 0x00000010
-#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020
-#define XFS_TRANS_SB_DBLOCKS 0x00000040
-#define XFS_TRANS_SB_AGCOUNT 0x00000080
-#define XFS_TRANS_SB_IMAXPCT 0x00000100
-#define XFS_TRANS_SB_REXTSIZE 0x00000200
-#define XFS_TRANS_SB_RBMBLOCKS 0x00000400
-#define XFS_TRANS_SB_RBLOCKS 0x00000800
-#define XFS_TRANS_SB_REXTENTS 0x00001000
-#define XFS_TRANS_SB_REXTSLOG 0x00002000
-
-
-/*
* Per-extent log reservation for the allocation btree changes
* involved in freeing or allocating an extent.
* 2 trees * (2 blocks/level * max depth - 1)
@@ -282,22 +93,6 @@ struct xfs_log_item_desc {
#define XFS_ATTRSET_LOG_COUNT 3
#define XFS_ATTRRM_LOG_COUNT 3

-/*
- * Here we centralize the specification of XFS meta-data buffer
- * reference count values. This determine how hard the buffer
- * cache tries to hold onto the buffer.
- */
-#define XFS_AGF_REF 4
-#define XFS_AGI_REF 4
-#define XFS_AGFL_REF 3
-#define XFS_INO_BTREE_REF 3
-#define XFS_ALLOC_BTREE_REF 2
-#define XFS_BMAP_BTREE_REF 2
-#define XFS_DIR_BTREE_REF 2
-#define XFS_INO_REF 2
-#define XFS_ATTR_BTREE_REF 1
-#define XFS_DQUOT_REF 1
-
#ifdef __KERNEL__

struct xfs_buf;
--
1.8.3.2