diff options
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/volumes.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 2d25e82f24a4..921c64a7289a 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6391,6 +6391,22 @@ static void map_blocks_raid1(struct btrfs_fs_info *fs_info, io_geom->mirror_num = io_geom->stripe_index + 1; } +static void map_blocks_dup(const struct btrfs_chunk_map *map, + struct btrfs_io_geometry *io_geom) +{ + if (io_geom->op != BTRFS_MAP_READ) { + io_geom->num_stripes = map->num_stripes; + return; + } + + if (io_geom->mirror_num) { + io_geom->stripe_index = io_geom->mirror_num - 1; + return; + } + + io_geom->mirror_num = 1; +} + /* * Map one logical range to one or more physical ranges. * @@ -6482,14 +6498,7 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, } else if (map->type & BTRFS_BLOCK_GROUP_RAID1_MASK) { map_blocks_raid1(fs_info, map, &io_geom, dev_replace_is_ongoing); } else if (map->type & BTRFS_BLOCK_GROUP_DUP) { - if (op != BTRFS_MAP_READ) { - io_geom.num_stripes = map->num_stripes; - } else if (io_geom.mirror_num) { - io_geom.stripe_index = io_geom.mirror_num - 1; - } else { - io_geom.mirror_num = 1; - } - + map_blocks_dup(map, &io_geom); } else if (map->type & BTRFS_BLOCK_GROUP_RAID10) { u32 factor = map->num_stripes / map->sub_stripes; |