From: Andre Noll Date: Wed, 17 Jun 2009 22:46:10 +0000 (+1000) Subject: md/raid5: Use is_power_of_2() in raid5_reconfig()/raid6_reconfig(). X-Git-Tag: v2.6.31-rc1~143^2~14 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0ba459d26260d4d13346c76642f461b2bf607eef;p=karo-tx-linux.git md/raid5: Use is_power_of_2() in raid5_reconfig()/raid6_reconfig(). Signed-off-by: Andre Noll Signed-off-by: NeilBrown --- diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index eaa2d3ee2b5d..72e8a324dcfb 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -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;