convert-to-host-order-in-ext4_fill_flex_info

   1 ext4: Convert to host order before using the values.
   2
   3 From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
   4
   5 Use le16_to_cpu to read the s_reserved_gdt_blocks values
   6 from super block.
   7
   8 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
   9 Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
  10 ---
  11  fs/ext4/super.c |    5 ++---
  12  1 files changed, 2 insertions(+), 3 deletions(-)
  13
  14 diff --git a/fs/ext4/super.c b/fs/ext4/super.c
  15 index 87ac84b..5bfc235 100644
  16 --- a/fs/ext4/super.c
  17 +++ b/fs/ext4/super.c
  18 @@ -1464,9 +1464,8 @@ static int ext4_fill_flex_info(struct super_block *sb)
  19
  20         /* We allocate both existing and potentially added groups */
  21         flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
  22 -                           ((sbi->s_es->s_reserved_gdt_blocks +1 ) <<
  23 -                             EXT4_DESC_PER_BLOCK_BITS(sb))) /
  24 -                          groups_per_flex;
  25 +                       ((le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) + 1) <<
  26 +                             EXT4_DESC_PER_BLOCK_BITS(sb))) / groups_per_flex;
  27         sbi->s_flex_groups = kzalloc(flex_group_count *
  28                                      sizeof(struct flex_groups), GFP_KERNEL);
  29         if (sbi->s_flex_groups == NULL) {
  30 --
  31 1.6.0.3.514.g2f91b
  32
  33