Commit 7735cd75 authored by David Sterba's avatar David Sterba
Browse files

btrfs: scrub: factor out common scrub_stripe constraints 



There are common values set for the stripe constraints, some of them
are already factored out. Do that for increment and mirror_num as well.

Reviewed-by: default avatarQu Wenruo <wqu@suse.com>
Reviewed-by: default avatarAnand Jain <anand.jain@oracle.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 1aeb6b56

fs/btrfs/scrub.c

+2 −7
Original line number Diff line number Diff line
@@ -3204,28 +3204,23 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, 
	physical = map->stripes[num].physical;

	offset = 0;

	nstripes = div64_u64(length, map->stripe_len);

	mirror_num = 1;

	increment = map->stripe_len;

	if (map->type & BTRFS_BLOCK_GROUP_RAID0) {

		offset = map->stripe_len * num;

		increment = map->stripe_len * map->num_stripes;

		mirror_num = 1;

	} else if (map->type & BTRFS_BLOCK_GROUP_RAID10) {

		int factor = map->num_stripes / map->sub_stripes;

		offset = map->stripe_len * (num / map->sub_stripes);

		increment = map->stripe_len * factor;

		mirror_num = num % map->sub_stripes + 1;

	} else if (map->type & BTRFS_BLOCK_GROUP_RAID1_MASK) {

		increment = map->stripe_len;

		mirror_num = num % map->num_stripes + 1;

	} else if (map->type & BTRFS_BLOCK_GROUP_DUP) {

		increment = map->stripe_len;

		mirror_num = num % map->num_stripes + 1;

	} else if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {

		get_raid56_logic_offset(physical, num, map, &offset, NULL);

		increment = map->stripe_len * nr_data_stripes(map);

		mirror_num = 1;

	} else {

		increment = map->stripe_len;

		mirror_num = 1;

	}



	path = btrfs_alloc_path();