diff options
| -rw-r--r-- | drivers/md/raid5.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index ef0fd4830803..a095c7a4cd7c 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6514,9 +6514,12 @@ raid5_store_stripe_size(struct mddev *mddev, const char *page, size_t len) /* * The value should not be bigger than PAGE_SIZE. It requires to - * be multiple of DEFAULT_STRIPE_SIZE. + * be multiple of DEFAULT_STRIPE_SIZE and the value should be power + * of two. */ - if (new % DEFAULT_STRIPE_SIZE != 0 || new > PAGE_SIZE || new == 0) + if (new % DEFAULT_STRIPE_SIZE != 0 || + new > PAGE_SIZE || new == 0 || + new != roundup_pow_of_two(new)) return -EINVAL; err = mddev_lock(mddev); |