From 7a3ab908948b6296ee7e81d42f7c176361c51975 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 16 Jun 2009 16:00:33 -0700 Subject: [PATCH] md/raid5: add missing call to schedule() after prepare_to_wait() In the unlikely event that reshape progresses past the current request while it is waiting for a stripe we need to schedule() before retrying for 2 reasons: 1/ Prevent list corruption from duplicated list_add() calls without intervening list_del(). 2/ Give the reshape code a chance to make some progress to resolve the conflict. Cc: Signed-off-by: Dan Williams Signed-off-by: NeilBrown --- drivers/md/raid5.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 8f2e3740a05a..59e29c2983cb 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3695,6 +3695,7 @@ static int make_request(struct request_queue *q, struct bio * bi) spin_unlock_irq(&conf->device_lock); if (must_retry) { release_stripe(sh); + schedule(); goto retry; } }