Messages in this thread Patch in this message | | | From | Johannes Thumshirn <> | Date | Tue, 12 Dec 2023 04:38:07 -0800 | Subject | [PATCH 09/13] btrfs: factor out block mapping for single profiles |
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Now that we have a container for the I/O geometry that has all the needed information for the block mappings of SINGLE profiles, factor out a helper calculating this information.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> --- fs/btrfs/volumes.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index fd213bb7d619..e7bd3a25c516 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6485,6 +6485,14 @@ static void map_blocks_for_raid56(struct btrfs_chunk_map *map, io_geom->mirror_num = 1; } +static void map_blocks_for_single(struct btrfs_chunk_map *map, + struct btrfs_io_geometry *io_geom) +{ + io_geom->stripe_index = io_geom->stripe_nr % map->num_stripes; + io_geom->stripe_nr /= map->num_stripes; + io_geom->mirror_num = io_geom->stripe_index + 1; +} + /* * Map one logical range to one or more physical ranges. * @@ -6584,9 +6592,7 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, * device we have to walk to find the data, and stripe_index is * the number of our device in the stripe array */ - io_geom.stripe_index = io_geom.stripe_nr % map->num_stripes; - io_geom.stripe_nr /= map->num_stripes; - io_geom.mirror_num = io_geom.stripe_index + 1; + map_blocks_for_single(map, &io_geom); } if (io_geom.stripe_index >= map->num_stripes) { btrfs_crit(fs_info, -- 2.43.0
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