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authorLiu Bo <bo.li.liu@oracle.com>2013-01-06 03:38:22 +0000
committerJosef Bacik <jbacik@fusionio.com>2013-01-24 12:51:17 -0500
commit192000dda22e02225772e862b92e7c09e5a17d08 (patch)
tree5ebfe29a6aa6b47f869adb7bc84cc954b733102d
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>
-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,
if (skip_csum)
return 0;
+ if (em->compress_type) {
+ csum_offset = 0;
+ csum_len = block_len;
+ }
+
/* block start is already adjusted for the file extent offset. */
ret = btrfs_lookup_csums_range(log->fs_info->csum_root,
em->block_start + csum_offset,