From a16fb8c6f61863f18fab61eeba10a457ff6d71d2 Mon Sep 17 00:00:00 2001 From: Johannes Thumshirn Date: Wed, 13 Dec 2023 06:43:04 -0800 Subject: btrfs: factor out block mapping for single profiles 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 Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/volumes.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'fs/btrfs') diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 19ad793e60fa..046f5f6345eb 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6484,6 +6484,14 @@ static void map_blocks_raid56_read(struct btrfs_chunk_map *map, io_geom->mirror_num = 1; } +static void map_blocks_single(const 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. * @@ -6586,9 +6594,7 @@ 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_single(map, &io_geom); } if (io_geom.stripe_index >= map->num_stripes) { btrfs_crit(fs_info, -- cgit v1.2.3