Commit fe8cf654 authored by Zhao Lei's avatar Zhao Lei Committed by Chris Mason

btrfs: Load only necessary csums into list in scrub

We need not load csum of whole strip in scrub because strip is trimed
before use, it is to say, what we really need to calculate csum is
data between [extent_logical, extent_len).

This patch changed to use above segment for btrfs_lookup_csums_range()
in scrub_stripe()
Signed-off-by: default avatarZhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent a0dd59de
......@@ -3254,8 +3254,10 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
&extent_dev,
&extent_mirror_num);
ret = btrfs_lookup_csums_range(csum_root, logical,
logical + map->stripe_len - 1,
ret = btrfs_lookup_csums_range(csum_root,
extent_logical,
extent_logical +
extent_len - 1,
&sctx->csum_list, 1);
if (ret)
goto out;
......
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