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| author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2023-12-13 06:43:04 -0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2023-12-15 23:03:59 +0100 |
| commit | a16fb8c6f61863f18fab61eeba10a457ff6d71d2 (patch) | |
| tree | a752f05b286997423ff84567dd72e2e7c1f67f97 /fs/btrfs | |
| parent | 089221d3457b8756d6823be9857884d938af817c (diff) | |
| download | linux-a16fb8c6f61863f18fab61eeba10a457ff6d71d2.tar.gz linux-a16fb8c6f61863f18fab61eeba10a457ff6d71d2.tar.bz2 linux-a16fb8c6f61863f18fab61eeba10a457ff6d71d2.zip | |
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 <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/volumes.c | 12 |
1 files changed, 9 insertions, 3 deletions
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, |