diff options
Diffstat (limited to 'fs/btrfs/block-group.c')
| -rw-r--r-- | fs/btrfs/block-group.c | 35 |
1 files changed, 15 insertions, 20 deletions
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index 444e9c89ff3e..1db24e6d6d90 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -514,7 +514,7 @@ static int load_extent_tree_free(struct btrfs_caching_control *caching_ctl) { struct btrfs_block_group *block_group = caching_ctl->block_group; struct btrfs_fs_info *fs_info = block_group->fs_info; - struct btrfs_root *extent_root = fs_info->extent_root; + struct btrfs_root *extent_root; struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_key key; @@ -529,6 +529,7 @@ static int load_extent_tree_free(struct btrfs_caching_control *caching_ctl) return -ENOMEM; last = max_t(u64, block_group->start, BTRFS_SUPER_INFO_OFFSET); + extent_root = btrfs_extent_root(fs_info, last); #ifdef CONFIG_BTRFS_DEBUG /* @@ -841,7 +842,7 @@ static int remove_block_group_item(struct btrfs_trans_handle *trans, struct btrfs_key key; int ret; - root = fs_info->extent_root; + root = btrfs_block_group_root(fs_info); key.objectid = block_group->start; key.type = BTRFS_BLOCK_GROUP_ITEM_KEY; key.offset = block_group->length; @@ -1106,6 +1107,7 @@ out: struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( struct btrfs_fs_info *fs_info, const u64 chunk_offset) { + struct btrfs_root *root = btrfs_block_group_root(fs_info); struct extent_map_tree *em_tree = &fs_info->mapping_tree; struct extent_map *em; struct map_lookup *map; @@ -1139,8 +1141,7 @@ struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( num_items = 3 + map->num_stripes; free_extent_map(em); - return btrfs_start_transaction_fallback_global_rsv(fs_info->extent_root, - num_items); + return btrfs_start_transaction_fallback_global_rsv(root, num_items); } /* @@ -1508,7 +1509,6 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) container_of(work, struct btrfs_fs_info, reclaim_bgs_work); struct btrfs_block_group *bg; struct btrfs_space_info *space_info; - LIST_HEAD(again_list); if (!test_bit(BTRFS_FS_OPEN, &fs_info->flags)) return; @@ -1585,18 +1585,14 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) div64_u64(zone_unusable * 100, bg->length)); trace_btrfs_reclaim_block_group(bg); ret = btrfs_relocate_chunk(fs_info, bg->start); - if (ret && ret != -EAGAIN) + if (ret) btrfs_err(fs_info, "error relocating chunk %llu", bg->start); next: + btrfs_put_block_group(bg); spin_lock(&fs_info->unused_bgs_lock); - if (ret == -EAGAIN && list_empty(&bg->bg_list)) - list_add_tail(&bg->bg_list, &again_list); - else - btrfs_put_block_group(bg); } - list_splice_tail(&again_list, &fs_info->reclaim_bgs); spin_unlock(&fs_info->unused_bgs_lock); mutex_unlock(&fs_info->reclaim_bgs_lock); btrfs_exclop_finish(fs_info); @@ -1678,7 +1674,7 @@ static int find_first_block_group(struct btrfs_fs_info *fs_info, struct btrfs_path *path, struct btrfs_key *key) { - struct btrfs_root *root = fs_info->extent_root; + struct btrfs_root *root = btrfs_block_group_root(fs_info); int ret; struct btrfs_key found_key; struct extent_buffer *leaf; @@ -2165,6 +2161,7 @@ static int fill_dummy_bgs(struct btrfs_fs_info *fs_info) int btrfs_read_block_groups(struct btrfs_fs_info *info) { + struct btrfs_root *root = btrfs_block_group_root(info); struct btrfs_path *path; int ret; struct btrfs_block_group *cache; @@ -2173,7 +2170,7 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info) int need_clear = 0; u64 cache_gen; - if (!info->extent_root) + if (!root) return fill_dummy_bgs(info); key.objectid = 0; @@ -2276,7 +2273,7 @@ static int insert_block_group_item(struct btrfs_trans_handle *trans, { struct btrfs_fs_info *fs_info = trans->fs_info; struct btrfs_block_group_item bgi; - struct btrfs_root *root; + struct btrfs_root *root = btrfs_block_group_root(fs_info); struct btrfs_key key; spin_lock(&block_group->lock); @@ -2289,7 +2286,6 @@ static int insert_block_group_item(struct btrfs_trans_handle *trans, key.offset = block_group->length; spin_unlock(&block_group->lock); - root = fs_info->extent_root; return btrfs_insert_item(trans, root, &key, &bgi, sizeof(bgi)); } @@ -2543,12 +2539,13 @@ int btrfs_inc_block_group_ro(struct btrfs_block_group *cache, { struct btrfs_fs_info *fs_info = cache->fs_info; struct btrfs_trans_handle *trans; + struct btrfs_root *root = btrfs_block_group_root(fs_info); u64 alloc_flags; int ret; bool dirty_bg_running; do { - trans = btrfs_join_transaction(fs_info->extent_root); + trans = btrfs_join_transaction(root); if (IS_ERR(trans)) return PTR_ERR(trans); @@ -2653,7 +2650,7 @@ static int update_block_group_item(struct btrfs_trans_handle *trans, { struct btrfs_fs_info *fs_info = trans->fs_info; int ret; - struct btrfs_root *root = fs_info->extent_root; + struct btrfs_root *root = btrfs_block_group_root(fs_info); unsigned long bi; struct extent_buffer *leaf; struct btrfs_block_group_item bgi; @@ -3790,7 +3787,7 @@ static void reserve_chunk_space(struct btrfs_trans_handle *trans, } if (!ret) { - ret = btrfs_block_rsv_add(fs_info->chunk_root, + ret = btrfs_block_rsv_add(fs_info, &fs_info->chunk_block_rsv, bytes, BTRFS_RESERVE_NO_FLUSH); if (!ret) @@ -3911,9 +3908,7 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info) list_del_init(&block_group->bg_list); btrfs_put_block_group(block_group); } - spin_unlock(&info->unused_bgs_lock); - spin_lock(&info->unused_bgs_lock); while (!list_empty(&info->reclaim_bgs)) { block_group = list_first_entry(&info->reclaim_bgs, struct btrfs_block_group, |