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-rw-r--r--fs/ocfs2/dlmglue.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index ac24f49..ce8e061 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -3392,9 +3392,17 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb,
spin_lock_irqsave(&lockres->l_lock, flags);
- BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BLOCKED));
-
recheck:
+ /*
+ * Is it still blocking? If not, we have no more work to do.
+ */
+ if (!(lockres->l_flags & OCFS2_LOCK_BLOCKED)) {
+ BUG_ON(lockres->l_blocking != DLM_LOCK_NL);
+ spin_unlock_irqrestore(&lockres->l_lock, flags);
+ ret = 0;
+ goto leave;
+ }
+
if (lockres->l_flags & OCFS2_LOCK_BUSY) {
/* XXX
* This is a *big* race. The OCFS2_LOCK_PENDING flag