]> pilppa.com Git - linux-2.6-omap-h63xx.git/commitdiff
ext4: Use is_power_of_2()
authorVignesh Babu <vignesh.babu@wipro.com>
Wed, 18 Jul 2007 13:11:02 +0000 (09:11 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Wed, 18 Jul 2007 13:11:02 +0000 (09:11 -0400)
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>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
fs/ext4/super.c

index b47259f6f39cd3e31db251b7c3eb904fdf4f083d..6dcbb28dc06d73edd841d6ecb8a1e93570ef4c29 100644 (file)
@@ -36,6 +36,7 @@
 #include <linux/namei.h>
 #include <linux/quotaops.h>
 #include <linux/seq_file.h>
+#include <linux/log2.h>
 
 #include <asm/uaccess.h>
 
@@ -1644,7 +1645,7 @@ static int ext4_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 < EXT4_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
                                "EXT4-fs: unsupported inode size: %d\n",