diff options
| author | Liu Bo <bo.liu@linux.alibaba.com> | 2018-08-22 22:51:51 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-10-15 18:23:33 +0300 |
| commit | 03a1d4c891634dd5b98da865fb783e8b22d4d027 (patch) | |
| tree | 13f08f751243f45acad6274532bc959e2ab37c55 /fs/btrfs/delayed-inode.h | |
| parent | e3d039656384288bbe952413d8d404b3035fe7d7 (diff) | |
| download | linux-03a1d4c891634dd5b98da865fb783e8b22d4d027.tar.xz | |
Btrfs: delayed-inode: use rb_first_cached for ins_root and del_root
rb_first_cached() trades an extra pointer "leftmost" for doing the same job as
rb_first() but in O(1).
Functions manipulating delayed_item need to get the first entry, this converts
it to use rb_first_cached().
For more details about the optimization see patch "Btrfs: delayed-refs:
use rb_first_cached for href_root".
Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/delayed-inode.h')
| -rw-r--r-- | fs/btrfs/delayed-inode.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h index 33536cd681d4..74ae226ffaf0 100644 --- a/fs/btrfs/delayed-inode.h +++ b/fs/btrfs/delayed-inode.h @@ -50,8 +50,8 @@ struct btrfs_delayed_node { * is waiting to be dealt with by the async worker. */ struct list_head p_list; - struct rb_root ins_root; - struct rb_root del_root; + struct rb_root_cached ins_root; + struct rb_root_cached del_root; struct mutex mutex; struct btrfs_inode_item inode_item; refcount_t refs; |