Commit 27a377db authored Feb 07, 2014 by Josef Bacik Committed by Chris Mason Feb 08, 2014

Btrfs: don't loop forever if we can't run because of the tree mod log

A user reported a 100% cpu hang with my new delayed ref code. Turns out I
forgot to increase the count check when we can't run a delayed ref because of
the tree mod log. If we can't run any delayed refs during this there is no
point in continuing to look, and we need to break out. Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

parent 8051aa1a

fs/btrfs/extent-tree.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2385,6 +2385,7 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
	spin_unlock(&delayed_refs->lock);		spin_unlock(&delayed_refs->lock);
	locked_ref = NULL;		locked_ref = NULL;
	cond_resched();		cond_resched();
			count++;
	continue;		continue;
	}		}