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authorMiao Xie <miaox@cn.fujitsu.com>2013-12-26 09:07:06 +0400
committerChris Mason <clm@fb.com>2014-01-29 01:20:09 +0400
commit67de11769bd5ec339a62169f500b04f304826c00 (patch)
tree5939ead04cfd0ca9a3e99d2fa0b2cfa9ac99ba1b /fs/btrfs/btrfs_inode.h
parent7cf35d91b4f143b5c7529976bf5e7573a07051cd (diff)
downloadlinux-67de11769bd5ec339a62169f500b04f304826c00.tar.xz
Btrfs: introduce the delayed inode ref deletion for the single link inode
The inode reference item is close to inode item, so we insert it simultaneously with the inode item insertion when we create a file/directory.. In fact, we also can handle the inode reference deletion by the same way. So we made this patch to introduce the delayed inode reference deletion for the single link inode(At most case, the file doesn't has hard link, so we don't take the hard link into account). This function is based on the delayed inode mechanism. After applying this patch, we can reduce the time of the file/directory deletion by ~10%. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/btrfs_inode.h')
-rw-r--r--fs/btrfs/btrfs_inode.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index ac0b39db27d1..661b0ac90e8f 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -135,6 +135,9 @@ struct btrfs_inode {
*/
u64 index_cnt;
+ /* Cache the directory index number to speed the dir/file remove */
+ u64 dir_index;
+
/* the fsync log has some corner cases that mean we have to check
* directories to see if any unlinks have been done before
* the directory was logged. See tree-log.c for all the