diff options
Diffstat (limited to 'check')
| -rw-r--r-- | check/main.c | 141 |
1 files changed, 85 insertions, 56 deletions
diff --git a/check/main.c b/check/main.c index 2a74e7d2..c25c50ef 100644 --- a/check/main.c +++ b/check/main.c @@ -8075,6 +8075,89 @@ static int deal_root_from_list(struct list_head *list, return ret; } +/** + * parse_tree_roots - Go over all roots in the tree root and add each one to + * a list. + * + * @fs_info - pointer to fs_info struct of the file system. + * + * @normal_trees - list to contains all roots which don't have a drop + * operation in progress + * + * @dropping_trees - list containing all roots which have a drop operation + * pending + * + * Returns 0 on success or a negative value indicating an error. + */ +static int parse_tree_roots(struct btrfs_fs_info *fs_info, + struct list_head *normal_trees, + struct list_head *dropping_trees) +{ + struct btrfs_path path; + struct btrfs_key key; + struct btrfs_key found_key; + struct btrfs_root_item ri; + struct extent_buffer *leaf; + int slot; + int ret = 0; + + btrfs_init_path(&path); + key.offset = 0; + key.objectid = 0; + key.type = BTRFS_ROOT_ITEM_KEY; + ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, &path, 0, 0); + if (ret < 0) + goto out; + while (1) { + leaf = path.nodes[0]; + slot = path.slots[0]; + if (slot >= btrfs_header_nritems(path.nodes[0])) { + ret = btrfs_next_leaf(fs_info->tree_root, &path); + if (ret != 0) + break; + leaf = path.nodes[0]; + slot = path.slots[0]; + } + btrfs_item_key_to_cpu(leaf, &found_key, path.slots[0]); + if (found_key.type == BTRFS_ROOT_ITEM_KEY) { + unsigned long offset; + u64 last_snapshot; + u8 level; + + offset = btrfs_item_ptr_offset(leaf, path.slots[0]); + read_extent_buffer(leaf, &ri, offset, sizeof(ri)); + last_snapshot = btrfs_root_last_snapshot(&ri); + level = btrfs_root_level(&ri); + if (btrfs_disk_key_objectid(&ri.drop_progress) == 0) { + ret = add_root_item_to_list(normal_trees, + found_key.objectid, + btrfs_root_bytenr(&ri), + last_snapshot, level, + 0, NULL); + if (ret < 0) + break; + } else { + u64 objectid = found_key.objectid; + + btrfs_disk_key_to_cpu(&found_key, + &ri.drop_progress); + ret = add_root_item_to_list(dropping_trees, + objectid, + btrfs_root_bytenr(&ri), + last_snapshot, level, + ri.drop_level, &found_key); + if (ret < 0) + break; + } + } + path.slots[0]++; + } + +out: + btrfs_release_path(&path); + return ret; +} + static int check_chunks_and_extents(struct btrfs_fs_info *fs_info) { struct rb_root dev_cache; @@ -8088,20 +8171,13 @@ static int check_chunks_and_extents(struct btrfs_fs_info *fs_info) struct cache_tree nodes; struct extent_io_tree excluded_extents; struct cache_tree corrupt_blocks; - struct btrfs_path path; - struct btrfs_key key; - struct btrfs_key found_key; int ret, err = 0; struct block_info *bits; int bits_nr; - struct extent_buffer *leaf; - int slot; - struct btrfs_root_item ri; struct list_head dropping_trees; struct list_head normal_trees; struct btrfs_root *root1; struct btrfs_root *root; - u64 objectid; u8 level; root = fs_info->fs_root; @@ -8152,57 +8228,10 @@ again: root1->node->start, 0, level, 0, NULL); if (ret < 0) goto out; - btrfs_init_path(&path); - key.offset = 0; - key.objectid = 0; - key.type = BTRFS_ROOT_ITEM_KEY; - ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, &path, 0, 0); + + ret = parse_tree_roots(fs_info, &normal_trees, &dropping_trees); if (ret < 0) goto out; - while (1) { - leaf = path.nodes[0]; - slot = path.slots[0]; - if (slot >= btrfs_header_nritems(path.nodes[0])) { - ret = btrfs_next_leaf(fs_info->tree_root, &path); - if (ret != 0) - break; - leaf = path.nodes[0]; - slot = path.slots[0]; - } - btrfs_item_key_to_cpu(leaf, &found_key, path.slots[0]); - if (found_key.type == BTRFS_ROOT_ITEM_KEY) { - unsigned long offset; - u64 last_snapshot; - - offset = btrfs_item_ptr_offset(leaf, path.slots[0]); - read_extent_buffer(leaf, &ri, offset, sizeof(ri)); - last_snapshot = btrfs_root_last_snapshot(&ri); - if (btrfs_disk_key_objectid(&ri.drop_progress) == 0) { - level = btrfs_root_level(&ri); - ret = add_root_item_to_list(&normal_trees, - found_key.objectid, - btrfs_root_bytenr(&ri), - last_snapshot, level, - 0, NULL); - if (ret < 0) - goto out; - } else { - level = btrfs_root_level(&ri); - objectid = found_key.objectid; - btrfs_disk_key_to_cpu(&found_key, - &ri.drop_progress); - ret = add_root_item_to_list(&dropping_trees, - objectid, - btrfs_root_bytenr(&ri), - last_snapshot, level, - ri.drop_level, &found_key); - if (ret < 0) - goto out; - } - } - path.slots[0]++; - } - btrfs_release_path(&path); /* * check_block can return -EAGAIN if it fixes something, please keep |