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md/raid5: Use is_power_of_2() in raid5_reconfig()/raid6_reconfig(). 

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Andre Noll 2009-06-18 08:46:10 +10:00 committed by NeilBrown
parent 09c9e5fa1b
commit 0ba459d262
1 changed files with 2 additions and 4 deletions
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6
drivers/md/raid5.c
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@ -5167,8 +5167,7 @@ static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
if (new_layout >= 0 && !algorithm_valid_raid5(new_layout))
return -EINVAL;
if (new_chunk > 0) {
if (new_chunk & (new_chunk-1))
/* not a power of 2 */
if (!is_power_of_2(new_chunk))
return -EINVAL;
if (new_chunk < PAGE_SIZE)
return -EINVAL;
@ -5206,8 +5205,7 @@ static int raid6_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
if (new_layout >= 0 && !algorithm_valid_raid6(new_layout))
return -EINVAL;
if (new_chunk > 0) {
if (new_chunk & (new_chunk-1))
/* not a power of 2 */
if (!is_power_of_2(new_chunk))
return -EINVAL;
if (new_chunk < PAGE_SIZE)
return -EINVAL;