diff options
Diffstat (limited to 'fs/btrfs/backref.c')
| -rw-r--r-- | fs/btrfs/backref.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 08405a3da6b1..f6dac40f87ff 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -560,13 +560,13 @@ static int __add_missing_keys(struct btrfs_fs_info *fs_info, */ static void __merge_refs(struct list_head *head, int mode) { - struct __prelim_ref *ref1; + struct __prelim_ref *pos1; - list_for_each_entry(ref1, head, list) { - struct __prelim_ref *ref2 = ref1, *tmp; + list_for_each_entry(pos1, head, list) { + struct __prelim_ref *pos2 = pos1, *tmp; - list_for_each_entry_safe_continue(ref2, tmp, head, list) { - struct __prelim_ref *xchg; + list_for_each_entry_safe_continue(pos2, tmp, head, list) { + struct __prelim_ref *xchg, *ref1 = pos1, *ref2 = pos2; struct extent_inode_elem *eie; if (!ref_for_same_block(ref1, ref2)) @@ -1406,7 +1406,8 @@ char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path, read_extent_buffer(eb, dest + bytes_left, name_off, name_len); if (eb != eb_in) { - btrfs_tree_read_unlock_blocking(eb); + if (!path->skip_locking) + btrfs_tree_read_unlock_blocking(eb); free_extent_buffer(eb); } ret = btrfs_find_item(fs_root, path, parent, 0, @@ -1426,9 +1427,10 @@ char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path, eb = path->nodes[0]; /* make sure we can use eb after releasing the path */ if (eb != eb_in) { - atomic_inc(&eb->refs); - btrfs_tree_read_lock(eb); - btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK); + if (!path->skip_locking) + btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK); + path->nodes[0] = NULL; + path->locks[0] = 0; } btrfs_release_path(path); iref = btrfs_item_ptr(eb, slot, struct btrfs_inode_ref); |