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(parent: e87ac13) | patch
Btrfs: remove unnecessary memory barrier in btrfs_sync_log()
authorMiao Xie <miaox@cn.fujitsu.com>
Thu, 20 Feb 2014 10:08:55 +0000 (18:08 +0800)
committerJosef Bacik <jbacik@fb.com>
Mon, 10 Mar 2014 19:16:41 +0000 (15:16 -0400)
commit7483e1a4464999c72b231af0efe39cb31fd73f14
treea9e5db4bb0cdd568002b735aa795109e9f9d4f32tree | snapshot (tar.gz zip)
parente87ac1368700af66c295afa47e5c7df0d9d8b919commit | diff
Btrfs: remove unnecessary memory barrier in btrfs_sync_log()

Mutex unlock implies certain memory barriers to make sure all the memory
operation completes before the unlock, and the next mutex lock implies memory
barriers to make sure the all the memory happens after the lock. So it is
a full memory barrier(smp_mb), we needn't add memory barriers. Remove them.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
fs/btrfs/tree-log.c diff | blob | blame | history