diff options
Diffstat (limited to 'fs/btrfs/relocation.c')
| -rw-r--r-- | fs/btrfs/relocation.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 3b9c9a001d0d..fb5125c8308c 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1969,8 +1969,29 @@ again: root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset, false); if (btrfs_root_refs(&reloc_root->root_item) > 0) { - BUG_ON(IS_ERR(root)); - BUG_ON(root->reloc_root != reloc_root); + if (IS_ERR(root)) { + /* + * For recovery we read the fs roots on mount, + * and if we didn't find the root then we marked + * the reloc root as a garbage root. For normal + * relocation obviously the root should exist in + * memory. However there's no reason we can't + * handle the error properly here just in case. + */ + ASSERT(0); + ret = PTR_ERR(root); + goto out; + } + if (root->reloc_root != reloc_root) { + /* + * This is actually impossible without something + * going really wrong (like weird race condition + * or cosmic rays). + */ + ASSERT(0); + ret = -EINVAL; + goto out; + } ret = merge_reloc_root(rc, root); btrfs_put_root(root); if (ret) { |