From: Vignesh Babu BM <vignesh.babu@wipro.com>
To: Kernel Janitors List <kernel-janitors@lists.osdl.org>
Cc: linux-ext4@vger.kernel.org
Subject: [KJ][PATCH] is_power_of_2 in ext2
Date: Tue, 20 Feb 2007 13:18:53 +0530 [thread overview]
Message-ID: <1171957733.6127.62.camel@wriver-t81fb058.linuxcoe> (raw)
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>
---
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 6347c2d..9f71032 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -29,6 +29,7 @@
#include <linux/vfs.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
+#include <linux/log2.h>
#include <asm/uaccess.h>
#include "ext2.h"
#include "xattr.h"
@@ -802,7 +803,7 @@ static int ext2_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 < EXT2_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 ("EXT2-fs: unsupported inode size: %d\n",
sbi->s_inode_size);
--
Regards,
Vignesh Babu BM
_____________________________________________________________
"Why is it that every time I'm with you, makes me believe in magic?"
reply other threads:[~2007-02-20 7:50 UTC|newest]
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