is_power_of_2-ext4-superc.patch

   1 Subject: is_power_of_2: ext4/super.c
   2 From: vignesh babu <vignesh.babu@wipro.com>
   3
   4 Replace (n & (n-1)) in the context of power of 2 checks with is_power_of_2()
   5
   6 Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
   7 Cc: <linux-ext4@vger.kernel.org>
   8 Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
   9 Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
  10 ---
  11
  12  fs/ext4/super.c |    3 ++-
  13  1 files changed, 2 insertions(+), 1 deletion(-)
  14
  15 diff -puN fs/ext4/super.c~is_power_of_2-ext4-superc fs/ext4/super.c
  16 --- a/fs/ext4/super.c~is_power_of_2-ext4-superc
  17 +++ a/fs/ext4/super.c
  18 @@ -36,6 +36,7 @@
  19  #include <linux/namei.h>
  20  #include <linux/quotaops.h>
  21  #include <linux/seq_file.h>
  22 +#include <linux/log2.h>
  23
  24  #include <asm/uaccess.h>
  25
  26 @@ -1662,7 +1663,7 @@ static int ext4_fill_super (struct super
  27                 sbi->s_inode_size = le16_to_cpu(es->s_inode_size);
  28                 sbi->s_first_ino = le32_to_cpu(es->s_first_ino);
  29                 if ((sbi->s_inode_size < EXT4_GOOD_OLD_INODE_SIZE) ||
  30 -                   (sbi->s_inode_size & (sbi->s_inode_size - 1)) ||
  31 +                   (!is_power_of_2(sbi->s_inode_size)) ||
  32                     (sbi->s_inode_size > blocksize)) {
  33                         printk (KERN_ERR
  34                                 "EXT4-fs: unsupported inode size: %d\n",
  35 _
  36
  37 Patches currently in -mm which might be from vignesh.babu@wipro.com are
  38
  39 git-ubi.patch
  40 use-is_power_of_2-in-cxgb3-cxgb3_mainc.patch
  41 use-is_power_of_2-in-myri10ge-myri10gec.patch
  42 is_power_of_2-ext3-superc.patch
  43 is_power_of_2-ext4-superc.patch
  44 is_pwoer_of_2-jbd.patch
  45