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Merge branch 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into block-5.9 

Pull MD fix from Song.

* 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md/raid5: make sure stripe_size as power of two
This commit is contained in:
Jens Axboe 2020-08-28 07:52:02 -06:00
parent 79e5dc59e2 6af10a33c5
commit a433d7217f
1 changed files with 5 additions and 2 deletions
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7
drivers/md/raid5.c
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@ -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 * 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; return -EINVAL;
err = mddev_lock(mddev); err = mddev_lock(mddev);