xfs: Inode create log items

Introduce the inode create log item type for logical inode create logging.
Instead of logging the changes in buffers, pass the range to be
initialised through the log by a new transaction type.  This reduces
the amount of log space required to record initialisation during
allocation from about 128 bytes per inode to a small fixed amount
per inode extent to be initialised.

This requires a new log item type to track it through the log
and the AIL. This is a relatively simple item - most callbacks are
noops as this item has the same life cycle as the transaction.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 822570ec605a..2b4946393e30 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -48,6 +48,7 @@ typedef struct xfs_trans_header {
 #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" }, \
@@ -107,7 +108,8 @@ typedef struct xfs_trans_header {
 #define XFS_TRANS_SWAPEXT               40
 #define XFS_TRANS_SB_COUNT              41
 #define XFS_TRANS_CHECKPOINT            42
-#define XFS_TRANS_TYPE_MAX              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 \