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

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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>
This commit is contained in:
Josef Bacik 2014-02-07 13:57:59 -05:00 committed by Chris Mason
parent 8051aa1a3d
commit 27a377db74
1 changed files with 1 additions and 0 deletions
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1
fs/btrfs/extent-tree.c
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@ -2385,6 +2385,7 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
spin_unlock(&delayed_refs->lock);
locked_ref = NULL;
cond_resched();
count++;
continue;
}