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authorTao Ma <boyu.mt@taobao.com>2012-10-22 00:34:32 -0400
committerTheodore Ts'o <tytso@mit.edu>2012-10-22 00:34:32 -0400
commit79f1ba49569e5aec919b653c55b03274c2331701 (patch)
tree612d4200d13a10d5df0cb6508cc5b1e7fd10fd45 /fs/ext4/ext4.h
parent76495ec1d47e1c0fe0673faf9179bda6bc8ab5c2 (diff)
ext4: Checksum the block bitmap properly with bigalloc enabled
In mke2fs, we only checksum the whole bitmap block and it is right. While in the kernel, we use EXT4_BLOCKS_PER_GROUP to indicate the size of the checksumed bitmap which is wrong when we enable bigalloc. The right size should be EXT4_CLUSTERS_PER_GROUP and this patch fixes it. Also as every caller of ext4_block_bitmap_csum_set and ext4_block_bitmap_csum_verify pass in EXT4_BLOCKS_PER_GROUP(sb)/8, we'd better removes this parameter and sets it in the function itself. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Lukas Czerner <lczerner@redhat.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 78971cfd9c7..3c20de1d59d 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1882,10 +1882,10 @@ int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
struct buffer_head *bh, int sz);
void ext4_block_bitmap_csum_set(struct super_block *sb, ext4_group_t group,
struct ext4_group_desc *gdp,
- struct buffer_head *bh, int sz);
+ struct buffer_head *bh);
int ext4_block_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
struct ext4_group_desc *gdp,
- struct buffer_head *bh, int sz);
+ struct buffer_head *bh);
/* balloc.c */
extern void ext4_validate_block_bitmap(struct super_block *sb,