Commit 89490303 authored May 08, 2020 by Filipe Manana Committed by David Sterba May 25, 2020

btrfs: scrub, only lookup for csums if we are dealing with a data extent



When scrubbing a stripe, whenever we find an extent we lookup for its
checksums in the checksum tree. However we do it even for metadata extents
which don't have checksum items stored in the checksum tree, that is
only for data extents.

So make the lookup for checksums only if we are processing with a data
extent.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent 684b752b

fs/btrfs/scrub.c

+8 −7

Original line number	Diff line number	Diff line
		@@ -3343,13 +3343,14 @@ again:
		&extent_dev,
		&extent_mirror_num);

		if (flags & BTRFS_EXTENT_FLAG_DATA) {
		ret = btrfs_lookup_csums_range(csum_root,
		extent_logical,
		extent_logical +
		extent_len - 1,
		extent_logical + extent_len - 1,
		&sctx->csum_list, 1);
		if (ret)
		goto out;
		}

		ret = scrub_extent(sctx, map, extent_logical, extent_len,
		extent_physical, extent_dev, flags,

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