diff options
| -rw-r--r-- | fs/btrfs/ctree.h | 2 | ||||
| -rw-r--r-- | fs/btrfs/disk-io.c | 24 | ||||
| -rw-r--r-- | fs/btrfs/extent-tree.c | 3 | ||||
| -rw-r--r-- | fs/btrfs/free-space-tree.c | 15 |
4 files changed, 28 insertions, 16 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index d79ba0570c55..9a88d0c69be4 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1856,6 +1856,8 @@ struct btrfs_fs_info { * and will be latter freed. Protected by fs_info->chunk_mutex. */ struct list_head pinned_chunks; + + int creating_free_space_tree; }; struct btrfs_subvolume_writers { diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 823c1ce87e2e..dc6b73a95342 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3065,6 +3065,18 @@ retry_root_backup: if (sb->s_flags & MS_RDONLY) return 0; + if (btrfs_test_opt(tree_root, FREE_SPACE_TREE) && + !btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE)) { + pr_info("BTRFS: creating free space tree\n"); + ret = btrfs_create_free_space_tree(fs_info); + if (ret) { + pr_warn("BTRFS: failed to create free space tree %d\n", + ret); + close_ctree(tree_root); + return ret; + } + } + down_read(&fs_info->cleanup_work_sem); if ((ret = btrfs_orphan_cleanup(fs_info->fs_root)) || (ret = btrfs_orphan_cleanup(fs_info->tree_root))) { @@ -3102,18 +3114,6 @@ retry_root_backup: } } - if (btrfs_test_opt(tree_root, FREE_SPACE_TREE) && - !btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE)) { - pr_info("BTRFS: creating free space tree\n"); - ret = btrfs_create_free_space_tree(fs_info); - if (ret) { - pr_warn("BTRFS: failed to create free space tree %d\n", - ret); - close_ctree(tree_root); - return ret; - } - } - if (!fs_info->uuid_root) { pr_info("BTRFS: creating UUID tree\n"); ret = btrfs_create_uuid_tree(fs_info); diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 83fc61db0e45..add4af641cfa 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2926,6 +2926,9 @@ int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, if (trans->aborted) return 0; + if (root->fs_info->creating_free_space_tree) + return 0; + if (root == root->fs_info->extent_root) root = root->fs_info->tree_root; diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c index cbe36dd0d97b..393e36bd5845 100644 --- a/fs/btrfs/free-space-tree.c +++ b/fs/btrfs/free-space-tree.c @@ -1067,6 +1067,8 @@ static int populate_free_space_tree(struct btrfs_trans_handle *trans, if (ret) goto out; + mutex_lock(&block_group->free_space_lock); + /* * Iterate through all of the extent and metadata items in this block * group, adding the free space between them and the free space at the @@ -1080,7 +1082,7 @@ static int populate_free_space_tree(struct btrfs_trans_handle *trans, ret = btrfs_search_slot_for_read(extent_root, &key, path, 1, 0); if (ret < 0) - goto out; + goto out_locked; ASSERT(ret == 0); start = block_group->key.objectid; @@ -1100,7 +1102,7 @@ static int populate_free_space_tree(struct btrfs_trans_handle *trans, key.objectid - start); if (ret) - goto out; + goto out_locked; } start = key.objectid; if (key.type == BTRFS_METADATA_ITEM_KEY) @@ -1114,7 +1116,7 @@ static int populate_free_space_tree(struct btrfs_trans_handle *trans, ret = btrfs_next_item(extent_root, path); if (ret < 0) - goto out; + goto out_locked; if (ret) break; } @@ -1122,10 +1124,12 @@ static int populate_free_space_tree(struct btrfs_trans_handle *trans, ret = __add_to_free_space_tree(trans, fs_info, block_group, path2, start, end - start); if (ret) - goto out; + goto out_locked; } ret = 0; +out_locked: + mutex_unlock(&block_group->free_space_lock); out: btrfs_free_path(path2); btrfs_free_path(path); @@ -1145,6 +1149,7 @@ int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info) if (IS_ERR(trans)) return PTR_ERR(trans); + fs_info->creating_free_space_tree = 1; free_space_root = btrfs_create_tree(trans, fs_info, BTRFS_FREE_SPACE_TREE_OBJECTID); if (IS_ERR(free_space_root)) { @@ -1164,6 +1169,7 @@ int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info) } btrfs_set_fs_compat_ro(fs_info, FREE_SPACE_TREE); + fs_info->creating_free_space_tree = 0; ret = btrfs_commit_transaction(trans, tree_root); if (ret) @@ -1172,6 +1178,7 @@ int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info) return 0; abort: + fs_info->creating_free_space_tree = 0; btrfs_abort_transaction(trans, tree_root, ret); btrfs_end_transaction(trans, tree_root); return ret; |