[patch]raid5: delete another BUG_ON

[Shaohua Li <shli@kernel.org>]

I hit another BUG_ON with e240c1839d11152b0355442. In __get_priority_stripe(),
stripe count equals to 0 initially. Between atomic_inc and BUG_ON,
get_active_stripe() finds the stripe. So the stripe count isn't 1 any more.

Signed-off-by: Shaohua Li <shli@fusionio.com>
---
 drivers/md/raid5.c |    1 -
 1 file changed, 1 deletion(-)

Index: linux/drivers/md/raid5.c
===================================================================
--- linux.orig/drivers/md/raid5.c	2014-04-14 11:44:11.448492119 +0800
+++ linux/drivers/md/raid5.c	2014-04-14 11:52:19.158359774 +0800
@@ -4371,7 +4371,6 @@ static struct stripe_head *__get_priorit
 	}
 	list_del_init(&sh->lru);
 	atomic_inc(&sh->count);
-	BUG_ON(atomic_read(&sh->count) != 1);
 	return sh;
 }