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is_power_of_2: ufs/super.c

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Replace (n & (n-1)) with is_power_of_2

Signed-off-by: vignesh babu <[email protected]>
Acked-by: Evgeniy Dushistov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
vignesh babu 2007-07-15 23:41:36 -07:00 • committed by Linus Torvalds
commit 9e8c4273ef
1 changed files with 3 additions and 2 deletions
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5
fs/ufs/super.c
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@ -87,6 +87,7 @@
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/log2.h>
#include "swab.h"
#include "util.h"
@ -854,7 +855,7 @@ magic_found:
uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
if (uspi->s_fsize & (uspi->s_fsize - 1)) {
if (!is_power_of_2(uspi->s_fsize)) {
printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n",
uspi->s_fsize);
goto failed;
@ -869,7 +870,7 @@ magic_found:
uspi->s_fsize);
goto failed;
}
if (uspi->s_bsize & (uspi->s_bsize - 1)) {
if (!is_power_of_2(uspi->s_bsize)) {
printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n",
uspi->s_bsize);
goto failed;