diff options
| -rw-r--r-- | fs/btrfs/backref.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 6a3f7f50ad37..835b6c9a26a8 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -1569,7 +1569,6 @@ static int iterate_inode_refs(u64 inum, struct btrfs_root *fs_root, struct btrfs_key found_key; while (!ret) { - path->leave_spinning = 1; ret = inode_ref_info(inum, parent ? parent+1 : 0, fs_root, path, &found_key); if (ret < 0) @@ -1582,9 +1581,12 @@ static int iterate_inode_refs(u64 inum, struct btrfs_root *fs_root, parent = found_key.offset; slot = path->slots[0]; - eb = path->nodes[0]; - /* make sure we can use eb after releasing the path */ - atomic_inc(&eb->refs); + eb = btrfs_clone_extent_buffer(path->nodes[0]); + if (!eb) { + ret = -ENOMEM; + break; + } + extent_buffer_get(eb); btrfs_tree_read_lock(eb); btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK); btrfs_release_path(path); @@ -1642,9 +1644,12 @@ static int iterate_inode_extrefs(u64 inum, struct btrfs_root *fs_root, ++found; slot = path->slots[0]; - eb = path->nodes[0]; - /* make sure we can use eb after releasing the path */ - atomic_inc(&eb->refs); + eb = btrfs_clone_extent_buffer(path->nodes[0]); + if (!eb) { + ret = -ENOMEM; + break; + } + extent_buffer_get(eb); btrfs_tree_read_lock(eb); btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK); |