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>
mariux64 · Sep 4, 2013 · 068213f · 068213f
1 parent 9d35814
commit 068213f
Showing 1 changed file with 0 additions and 1 deletion.
diff --git 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);