diff options
Diffstat (limited to 'fs/btrfs/ref-verify.c')
| -rw-r--r-- | fs/btrfs/ref-verify.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/btrfs/ref-verify.c b/fs/btrfs/ref-verify.c index 3871c3a6c743..de4cb0f3fbd0 100644 --- a/fs/btrfs/ref-verify.c +++ b/fs/btrfs/ref-verify.c @@ -971,7 +971,7 @@ void btrfs_free_ref_tree_range(struct btrfs_fs_info *fs_info, u64 start, int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info) { struct btrfs_root *extent_root; - struct btrfs_path *path; + BTRFS_PATH_AUTO_FREE(path); struct extent_buffer *eb; int tree_block_level = 0; u64 bytenr = 0, num_bytes = 0; @@ -980,11 +980,18 @@ int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info) if (!btrfs_test_opt(fs_info, REF_VERIFY)) return 0; + extent_root = btrfs_extent_root(fs_info, 0); + /* If the extent tree is damaged we cannot ignore it (IGNOREBADROOTS). */ + if (IS_ERR(extent_root)) { + btrfs_warn(fs_info, "ref-verify: extent tree not available, disabling"); + btrfs_clear_opt(fs_info->mount_opt, REF_VERIFY); + return 0; + } + path = btrfs_alloc_path(); if (!path) return -ENOMEM; - extent_root = btrfs_extent_root(fs_info, 0); eb = btrfs_read_lock_root_node(extent_root); level = btrfs_header_level(eb); path->nodes[level] = eb; @@ -1014,6 +1021,5 @@ int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info) btrfs_free_ref_cache(fs_info); btrfs_clear_opt(fs_info->mount_opt, REF_VERIFY); } - btrfs_free_path(path); return ret; } |