From d8ea6cf89991000ae458e34e36379814cf202555 Mon Sep 17 00:00:00 2001
From: vignesh babu <vignesh.babu@wipro.com>
Date: Tue, 16 Oct 2007 23:27:14 -0700
Subject: ext2/4: use is_power_of_2()

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

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/ext4/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'fs/ext4')

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 0e829cc8a18..4c8d31c6145 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1738,7 +1738,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
 	if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) {
 		if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT ||
 		    sbi->s_desc_size > EXT4_MAX_DESC_SIZE ||
-		    sbi->s_desc_size & (sbi->s_desc_size - 1)) {
+		    !is_power_of_2(sbi->s_desc_size)) {
 			printk(KERN_ERR
 			       "EXT4-fs: unsupported descriptor size %lu\n",
 			       sbi->s_desc_size);
-- 
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