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>
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@ -1411,7 +1411,6 @@ __acquires(&lru_lock)
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if (demote_ok(gl))
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handle_callback(gl, LM_ST_UNLOCKED, 0, false);
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WARN_ON(!test_and_clear_bit(GLF_LOCK, &gl->gl_flags));
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smp_mb__after_clear_bit();
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if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
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gfs2_glock_put_nolock(gl);
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spin_unlock(&gl->gl_spin);
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