diff options
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 40e5b41e91cc..7b61b7b5122f 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -1177,7 +1177,22 @@ int insert_inline_extent_backref(struct btrfs_trans_handle *trans, num_bytes, parent, root_objectid, owner, offset, 1); if (ret == 0) { - BUG_ON(owner < BTRFS_FIRST_FREE_OBJECTID); + /* + * We're adding refs to a tree block we already own, this + * should not happen at all. + */ + if (owner < BTRFS_FIRST_FREE_OBJECTID) { + btrfs_crit(trans->fs_info, +"adding refs to an existing tree ref, bytenr %llu num_bytes %llu root_objectid %llu", + bytenr, num_bytes, root_objectid); + if (IS_ENABLED(CONFIG_BTRFS_DEBUG)) { + WARN_ON(1); + btrfs_crit(trans->fs_info, + "path->slots[0]=%d path->nodes[0]:", path->slots[0]); + btrfs_print_leaf(path->nodes[0]); + } + return -EUCLEAN; + } update_inline_extent_backref(path, iref, refs_to_add, extent_op, NULL); } else if (ret == -ENOENT) { @@ -1397,6 +1412,9 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, /* * __btrfs_inc_extent_ref - insert backreference for a given extent * + * The counterpart is in __btrfs_free_extent(), with examples and more details + * how it works. + * * @trans: Handle of transaction * * @node: The delayed ref node used to get the bytenr/length for |