| From | Luis Henriques <> | Subject | [PATCH 3.11 102/182] dm thin: fix dangling bio in process_deferred_bios error path | Date | Thu, 24 Apr 2014 09:50:27 +0100 |
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3.11.10.9 -stable review patch. If anyone has any objections, please let me know.
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From: Mike Snitzer <snitzer@redhat.com>
commit fe76cd88e654124d1431bb662a0fc6e99ca811a5 upstream.
If unable to ensure_next_mapping() we must add the current bio, which was removed from the @bios list via bio_list_pop, back to the deferred_bios list before all the remaining @bios.
Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/md/dm-thin.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index b75f2a4..316f8a9 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1324,9 +1324,9 @@ static void process_deferred_bios(struct pool *pool) */ if (ensure_next_mapping(pool)) { spin_lock_irqsave(&pool->lock, flags); + bio_list_add(&pool->deferred_bios, bio); bio_list_merge(&pool->deferred_bios, &bios); spin_unlock_irqrestore(&pool->lock, flags); - break; } -- 1.9.1
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