GFS2: Remove unnecessary memory barrier

Function test_and_clear_bit implies a memory barrier, so subsequent
memory barriers are unnecessary.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index ce7078d5aa97..722329cac98f 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1411,7 +1411,6 @@ __acquires(&lru_lock)
                 if (demote_ok(gl))
                         handle_callback(gl, LM_ST_UNLOCKED, 0, false);
                 WARN_ON(!test_and_clear_bit(GLF_LOCK, &gl->gl_flags));
-                smp_mb__after_clear_bit();
                 if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
                         gfs2_glock_put_nolock(gl);
                 spin_unlock(&gl->gl_spin);