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Btrfs: introduce masks for chunk type and profile
Chunk's type and profile are encoded in u64 flags field. Introduce masks to easily access them. Also fix the type of BTRFS_BLOCK_GROUP_* constants, it should be ULL. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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@ -751,15 +751,23 @@ struct btrfs_csum_item {
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} __attribute__ ((__packed__));
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/* different types of block groups (and chunks) */
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#define BTRFS_BLOCK_GROUP_DATA (1 << 0)
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#define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
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#define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
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#define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
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#define BTRFS_BLOCK_GROUP_RAID1 (1 << 4)
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#define BTRFS_BLOCK_GROUP_DUP (1 << 5)
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#define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
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#define BTRFS_NR_RAID_TYPES 5
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#define BTRFS_BLOCK_GROUP_DATA (1ULL << 0)
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#define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1)
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#define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2)
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#define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3)
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#define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4)
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#define BTRFS_BLOCK_GROUP_DUP (1ULL << 5)
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#define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6)
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#define BTRFS_NR_RAID_TYPES 5
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#define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \
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BTRFS_BLOCK_GROUP_SYSTEM | \
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BTRFS_BLOCK_GROUP_METADATA)
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#define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \
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BTRFS_BLOCK_GROUP_RAID1 | \
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BTRFS_BLOCK_GROUP_DUP | \
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BTRFS_BLOCK_GROUP_RAID10)
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struct btrfs_block_group_item {
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__le64 used;
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__le64 chunk_objectid;
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@ -618,8 +618,7 @@ static struct btrfs_space_info *__find_space_info(struct btrfs_fs_info *info,
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struct list_head *head = &info->space_info;
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struct btrfs_space_info *found;
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flags &= BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_SYSTEM |
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BTRFS_BLOCK_GROUP_METADATA;
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flags &= BTRFS_BLOCK_GROUP_TYPE_MASK;
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rcu_read_lock();
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list_for_each_entry_rcu(found, head, list) {
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@ -2993,9 +2992,7 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
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INIT_LIST_HEAD(&found->block_groups[i]);
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init_rwsem(&found->groups_sem);
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spin_lock_init(&found->lock);
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found->flags = flags & (BTRFS_BLOCK_GROUP_DATA |
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BTRFS_BLOCK_GROUP_SYSTEM |
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BTRFS_BLOCK_GROUP_METADATA);
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found->flags = flags & BTRFS_BLOCK_GROUP_TYPE_MASK;
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found->total_bytes = total_bytes;
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found->disk_total = total_bytes * factor;
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found->bytes_used = bytes_used;
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@ -3016,10 +3013,7 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
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static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags)
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{
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u64 extra_flags = flags & (BTRFS_BLOCK_GROUP_RAID0 |
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BTRFS_BLOCK_GROUP_RAID1 |
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BTRFS_BLOCK_GROUP_RAID10 |
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BTRFS_BLOCK_GROUP_DUP);
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u64 extra_flags = flags & BTRFS_BLOCK_GROUP_PROFILE_MASK;
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if (extra_flags) {
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if (flags & BTRFS_BLOCK_GROUP_DATA)
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fs_info->avail_data_alloc_bits |= extra_flags;
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@ -2949,12 +2949,8 @@ again:
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}
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}
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if (rw & REQ_DISCARD) {
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if (map->type & (BTRFS_BLOCK_GROUP_RAID0 |
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BTRFS_BLOCK_GROUP_RAID1 |
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BTRFS_BLOCK_GROUP_DUP |
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BTRFS_BLOCK_GROUP_RAID10)) {
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if (map->type & BTRFS_BLOCK_GROUP_PROFILE_MASK)
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stripes_required = map->num_stripes;
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}
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}
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if (bbio_ret && (rw & (REQ_WRITE | REQ_DISCARD)) &&
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stripes_allocated < stripes_required) {
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@ -2978,10 +2974,7 @@ again:
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if (rw & REQ_DISCARD)
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*length = min_t(u64, em->len - offset, *length);
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else if (map->type & (BTRFS_BLOCK_GROUP_RAID0 |
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BTRFS_BLOCK_GROUP_RAID1 |
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BTRFS_BLOCK_GROUP_RAID10 |
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BTRFS_BLOCK_GROUP_DUP)) {
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else if (map->type & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
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/* we limit the length of each bio to what fits in a stripe */
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*length = min_t(u64, em->len - offset,
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map->stripe_len - stripe_offset);
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