is_power_of_2: ufs/super.c

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

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Acked-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 22ff6ed55ce9..2b3011689e89 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -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;