Commit 068213f7 authored by Bob Peterson's avatar Bob Peterson Committed by Steven Whitehouse
Browse files

GFS2: Remove unnecessary memory barrier 



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

Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
parent 9d358143

fs/gfs2/glock.c

+0 −1
Original line number Diff line number Diff line
@@ -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);