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-rw-r--r--drivers/md/raid5.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index f8b906843926..f013d3662665 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -340,7 +340,8 @@ static void release_stripe(struct stripe_head *sh)
unsigned long flags;
bool wakeup;
- if (test_and_set_bit(STRIPE_ON_RELEASE_LIST, &sh->state))
+ if (unlikely(!conf->mddev->thread) ||
+ test_and_set_bit(STRIPE_ON_RELEASE_LIST, &sh->state))
goto slow_path;
wakeup = llist_add(&sh->release_list, &conf->released_stripes);
if (wakeup)