diff options
| -rw-r--r-- | fs/btrfs/backref.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index b38a680e6678..ac3c34f47b56 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -2708,7 +2708,17 @@ static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache, if (btrfs_root_level(&root->root_item) == cur->level) { /* Tree root */ ASSERT(btrfs_root_bytenr(&root->root_item) == cur->bytenr); - if (btrfs_should_ignore_reloc_root(root)) { + /* + * For reloc backref cache, we may ignore reloc root. But for + * general purpose backref cache, we can't rely on + * btrfs_should_ignore_reloc_root() as it may conflict with + * current running relocation and lead to missing root. + * + * For general purpose backref cache, reloc root detection is + * completely relying on direct backref (key->offset is parent + * bytenr), thus only do such check for reloc cache. + */ + if (btrfs_should_ignore_reloc_root(root) && cache->is_reloc) { btrfs_put_root(root); list_add(&cur->list, &cache->useless_node); } else { @@ -2749,7 +2759,9 @@ static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache, if (!path->nodes[level]) { ASSERT(btrfs_root_bytenr(&root->root_item) == lower->bytenr); - if (btrfs_should_ignore_reloc_root(root)) { + /* Same as previous should_ignore_reloc_root() call */ + if (btrfs_should_ignore_reloc_root(root) && + cache->is_reloc) { btrfs_put_root(root); list_add(&lower->list, &cache->useless_node); } else { |