is_power_of_2: ext3/super.c

Replace (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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 69a59d4580e9..440c35d98993 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -35,6 +35,7 @@
 #include <linux/namei.h>
 #include <linux/quotaops.h>
 #include <linux/seq_file.h>
+#include <linux/log2.h>
 
 #include <asm/uaccess.h>
 
@@ -1574,7 +1575,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
                 sbi->s_inode_size = le16_to_cpu(es->s_inode_size);
                 sbi->s_first_ino = le32_to_cpu(es->s_first_ino);
                 if ((sbi->s_inode_size < EXT3_GOOD_OLD_INODE_SIZE) ||
-                    (sbi->s_inode_size & (sbi->s_inode_size - 1)) ||
+                    (!is_power_of_2(sbi->s_inode_size)) ||
                     (sbi->s_inode_size > blocksize)) {
                         printk (KERN_ERR
                                 "EXT3-fs: unsupported inode size: %d\n",