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| author | Darrick J. Wong <djwong@us.ibm.com> | 2012-04-30 02:35:10 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-04-30 02:35:10 +0400 |
| commit | fa77dcfafeaa6bc73293c646bfc3d5192dcf0be2 (patch) | |
| tree | 66c4232c2e5c1f59666e05164b77539a9b1dd290 /fs/ext4/ext4.h | |
| parent | 41a246d1ff75a95d2be3191ca6e6db139dc0f430 (diff) | |
| download | linux-fa77dcfafeaa6bc73293c646bfc3d5192dcf0be2.tar.xz | |
ext4: calculate and verify block bitmap checksum
Compute and verify the checksum of the block bitmap; this checksum is
stored in the block group descriptor.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 7f0ff88f32ba..7a4f16075257 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1857,8 +1857,18 @@ void ext4_inode_bitmap_csum_set(struct super_block *sb, ext4_group_t group, int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group, struct ext4_group_desc *gdp, 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); +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); /* balloc.c */ +extern void ext4_validate_block_bitmap(struct super_block *sb, + struct ext4_group_desc *desc, + unsigned int block_group, + struct buffer_head *bh); extern unsigned int ext4_block_group(struct super_block *sb, ext4_fsblk_t blocknr); extern ext4_grpblk_t ext4_block_group_offset(struct super_block *sb, |