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| author | Darrick J. Wong <djwong@us.ibm.com> | 2012-04-29 18:35:10 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-04-29 18:35:10 -0400 |
| commit | fa77dcfafeaa6bc73293c646bfc3d5192dcf0be2 (patch) | |
| tree | 66c4232c2e5c1f59666e05164b77539a9b1dd290 /fs/ext4/resize.c | |
| parent | 41a246d1ff75a95d2be3191ca6e6db139dc0f430 (diff) | |
| download | op-kernel-dev-fa77dcfafeaa6bc73293c646bfc3d5192dcf0be2.zip op-kernel-dev-fa77dcfafeaa6bc73293c646bfc3d5192dcf0be2.tar.gz | |
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/resize.c')
| -rw-r--r-- | fs/ext4/resize.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index 7810cac..dc597e0 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1107,6 +1107,13 @@ static int ext4_set_bitmap_checksums(struct super_block *sb, EXT4_INODES_PER_GROUP(sb) / 8); brelse(bh); + bh = ext4_get_bitmap(sb, group_data->block_bitmap); + if (!bh) + return -EIO; + ext4_block_bitmap_csum_set(sb, group, gdp, bh, + EXT4_BLOCKS_PER_GROUP(sb) / 8); + brelse(bh); + return 0; } |
