From: Mike Snitzer <snitzer@xxxxxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
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@xxxxxxxxxx>
Acked-by: Joe Thornber <ejt@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
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 e9587101b04f..e4cc196634c1 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1332,9 +1332,9 @@ 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;
}
--
1.9.3
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