2007-06-25 19:13:51

by Andrew Morton

[permalink] [raw]
Subject: + is_power_of_2-ext4-superc.patch added to -mm tree


The patch titled
is_power_of_2: ext3/super.c
has been added to the -mm tree. Its filename is
is_power_of_2-ext4-superc.patch

*** Remember to use Documentation/SubmitChecklist when testing your code ***

See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this

------------------------------------------------------
Subject: is_power_of_2: ext3/super.c
From: vignesh babu <[email protected]>

Replace (n & (n-1)) in the context of power of 2 checks with is_power_of_2()

Signed-off-by: vignesh babu <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

fs/ext4/super.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)

diff -puN fs/ext4/super.c~is_power_of_2-ext4-superc fs/ext4/super.c
--- a/fs/ext4/super.c~is_power_of_2-ext4-superc
+++ a/fs/ext4/super.c
@@ -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>

@@ -1662,7 +1663,7 @@ static int ext4_fill_super (struct super
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",
_

Patches currently in -mm which might be from [email protected] are

git-ubi.patch
use-is_power_of_2-in-cxgb3-cxgb3_mainc.patch
use-is_power_of_2-in-myri10ge-myri10gec.patch
is_power_of_2-ext3-superc.patch
is_power_of_2-ext4-superc.patch
is_pwoer_of_2-jbd.patch