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authorLiu Bo2013-01-05 21:38:22 -0600
committerJosef Bacik2013-01-24 11:51:17 -0600
commit192000dda22e02225772e862b92e7c09e5a17d08 (patch)
tree5ebfe29a6aa6b47f869adb7bc84cc954b733102d /fs
parentb0175117b9376a69978bbe80af26fb95dddbd53e (diff)
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Btrfs: use right range to find checksum for compressed extents
For compressed extents, the range of checksum is covered by disk length, and the disk length is different with ram length, so we need to use disk length instead to get us the right checksum. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/tree-log.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index de8899b04d6..9027bb1e746 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -3357,6 +3357,11 @@ static int log_one_extent(struct btrfs_trans_handle *trans,
3357 if (skip_csum) 3357 if (skip_csum)
3358 return 0; 3358 return 0;
3359 3359
3360 if (em->compress_type) {
3361 csum_offset = 0;
3362 csum_len = block_len;
3363 }
3364
3360 /* block start is already adjusted for the file extent offset. */ 3365 /* block start is already adjusted for the file extent offset. */
3361 ret = btrfs_lookup_csums_range(log->fs_info->csum_root, 3366 ret = btrfs_lookup_csums_range(log->fs_info->csum_root,
3362 em->block_start + csum_offset, 3367 em->block_start + csum_offset,