| Message ID | 1392261587-29035-1-git-send-email-wangsl.fnst@cn.fujitsu.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index a88da72..860f4f2 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -873,8 +873,10 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, path = btrfs_alloc_path(); if (!path) return -ENOMEM; - if (!trans) + if (!trans) { path->search_commit_root = 1; + path->skip_locking = 1; + } /* * grab both a lock on the path and a lock on the delayed ref head.
We won't change commit root, skip locking dance with commit root when walking backrefs, this can speed up btrfs send operations. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> --- fs/btrfs/backref.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)