GFS2: Fix glock ref counting bug
Depending on the ordering of events as we go around the glock shrinker loop, it is possible to drop the ref count of a glock incorrectly. It doesn't happen very often. This patch corrects the got_ref variable, fixing the problem. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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@ -1304,6 +1304,7 @@ static int gfs2_shrink_glock_memory(int nr, gfp_t gfp_mask)
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nr--;
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if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
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gfs2_glock_put(gl);
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got_ref = 0;
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}
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spin_lock(&lru_lock);
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if (may_demote)
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