Commit 192000dd authored Jan 06, 2013 by Liu Bo Committed by Josef Bacik Jan 24, 2013

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>

parent b0175117

fs/btrfs/tree-log.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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,