Merge tag '3.15-fixes' of git://neil.brown.name/md
Pull md bugfix from Neil Brown:
"One BUG fix for md for recent commit"
* tag '3.15-fixes' of git://neil.brown.name/md:
raid5: fix a race of stripe count check
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 25247a8..ad1b9be 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4370,8 +4370,7 @@
sh->group = NULL;
}
list_del_init(&sh->lru);
- atomic_inc(&sh->count);
- BUG_ON(atomic_read(&sh->count) != 1);
+ BUG_ON(atomic_inc_return(&sh->count) != 1);
return sh;
}