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| author | Wang Shilong | 2014-02-13 04:19:47 +0100 |
|---|---|---|
| committer | Josef Bacik | 2014-03-10 20:16:55 +0100 |
| commit | e84752d434b5cca0869e906e7b94d0531b25c6d3 (patch) | |
| tree | ead4db0b6f80fef7abfde5396dbd1f7967cc2b9a /fs/btrfs/backref.c | |
| parent | Btrfs: wake up @scrub_pause_wait as much as we can (diff) | |
| download | kernel-qcow2-linux-e84752d434b5cca0869e906e7b94d0531b25c6d3.tar.gz kernel-qcow2-linux-e84752d434b5cca0869e906e7b94d0531b25c6d3.tar.xz kernel-qcow2-linux-e84752d434b5cca0869e906e7b94d0531b25c6d3.zip | |
Btrfs: skip locking when searching commit root
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>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'fs/btrfs/backref.c')
| -rw-r--r-- | fs/btrfs/backref.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index a88da721dfc5..860f4f22b9b0 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. |