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authorvignesh babu <vignesh.babu@wipro.com>2007-10-17 02:27:14 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 11:42:53 -0400
commitd8ea6cf89991000ae458e34e36379814cf202555 (patch)
tree267324741b51696f4e5642ff4f53746cee78e4cc
parent3befe7ceb8d39a56a9ea55dd2da8b4bd9ddcdd36 (diff)
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>
-rw-r--r--fs/ext2/super.c3
-rw-r--r--fs/ext4/super.c2
2 files changed, 3 insertions, 2 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 3e78af2ae7d8..51b4c43b97e4 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -30,6 +30,7 @@
30#include <linux/vfs.h> 30#include <linux/vfs.h>
31#include <linux/seq_file.h> 31#include <linux/seq_file.h>
32#include <linux/mount.h> 32#include <linux/mount.h>
33#include <linux/log2.h>
33#include <asm/uaccess.h> 34#include <asm/uaccess.h>
34#include "ext2.h" 35#include "ext2.h"
35#include "xattr.h" 36#include "xattr.h"
@@ -862,7 +863,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
862 sbi->s_inode_size = le16_to_cpu(es->s_inode_size); 863 sbi->s_inode_size = le16_to_cpu(es->s_inode_size);
863 sbi->s_first_ino = le32_to_cpu(es->s_first_ino); 864 sbi->s_first_ino = le32_to_cpu(es->s_first_ino);
864 if ((sbi->s_inode_size < EXT2_GOOD_OLD_INODE_SIZE) || 865 if ((sbi->s_inode_size < EXT2_GOOD_OLD_INODE_SIZE) ||
865 (sbi->s_inode_size & (sbi->s_inode_size - 1)) || 866 !is_power_of_2(sbi->s_inode_size) ||
866 (sbi->s_inode_size > blocksize)) { 867 (sbi->s_inode_size > blocksize)) {
867 printk ("EXT2-fs: unsupported inode size: %d\n", 868 printk ("EXT2-fs: unsupported inode size: %d\n",
868 sbi->s_inode_size); 869 sbi->s_inode_size);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 0e829cc8a18a..4c8d31c61454 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)
1738 if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) { 1738 if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) {
1739 if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT || 1739 if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT ||
1740 sbi->s_desc_size > EXT4_MAX_DESC_SIZE || 1740 sbi->s_desc_size > EXT4_MAX_DESC_SIZE ||
1741 sbi->s_desc_size & (sbi->s_desc_size - 1)) { 1741 !is_power_of_2(sbi->s_desc_size)) {
1742 printk(KERN_ERR 1742 printk(KERN_ERR
1743 "EXT4-fs: unsupported descriptor size %lu\n", 1743 "EXT4-fs: unsupported descriptor size %lu\n",
1744 sbi->s_desc_size); 1744 sbi->s_desc_size);