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[IA64] is_power_of_2-ia64/mm/hugetlbpage.c

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Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
vignesh babu 2007-06-07 15:27:46 +05:30 committed by Tony Luck
parent 189548642c
commit 9be26f4c4b
1 changed files with 2 additions and 1 deletions
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3
arch/ia64/mm/hugetlbpage.c
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@ -15,6 +15,7 @@
#include <linux/pagemap.h>
#include <linux/slab.h>
#include <linux/sysctl.h>
#include <linux/log2.h>
#include <asm/mman.h>
#include <asm/pgalloc.h>
#include <asm/tlb.h>
@ -182,7 +183,7 @@ static int __init hugetlb_setup_sz(char *str)
tr_pages = 0x15557000UL;
size = memparse(str, &str);
if (*str || (size & (size-1)) || !(tr_pages & size) ||
if (*str || !is_power_of_2(size) || !(tr_pages & size) ||
size <= PAGE_SIZE ||
size >= (1UL << PAGE_SHIFT << MAX_ORDER)) {
printk(KERN_WARNING "Invalid huge page size specified\n");