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btrfs: open code set_io_stripe for RAID56

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Open code set_io_stripe() for RAID56, as it

a) uses a different method to calculate the stripe_index
b) doesn't need to go through raid-stripe-tree mapping code.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2023-12-13 06:43:06 -08:00 committed by David Sterba
parent b55b307785
commit 89f547c6cc
1 changed files with 9 additions and 7 deletions
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16
fs/btrfs/volumes.c
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@ -6670,13 +6670,15 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
btrfs_stripe_nr_to_offset(io_geom.stripe_nr *
nr_data_stripes(map));
for (int i = 0; i < io_geom.num_stripes; i++) {
ret = set_io_stripe(fs_info, op, logical, length,
&bioc->stripes[i], map,
(i + io_geom.stripe_nr) % io_geom.num_stripes,
io_geom.stripe_offset,
io_geom.stripe_nr);
if (ret < 0)
break;
struct btrfs_io_stripe *dst = &bioc->stripes[i];
u32 stripe_index;
stripe_index = (i + io_geom.stripe_nr) % io_geom.num_stripes;
dst->dev = map->stripes[stripe_index].dev;
dst->physical =
map->stripes[stripe_index].physical +
io_geom.stripe_offset +
btrfs_stripe_nr_to_offset(io_geom.stripe_nr);
}
} else {
/*