diff options
Diffstat (limited to 'fs/btrfs/backref.c')
| -rw-r--r-- | fs/btrfs/backref.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 835b6c9a26a..34a8952de8d 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -538,14 +538,13 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq, if (extent_op && extent_op->update_key) btrfs_disk_key_to_cpu(&op_key, &extent_op->key); - while ((n = rb_prev(n))) { + spin_lock(&head->lock); + n = rb_first(&head->ref_root); + while (n) { struct btrfs_delayed_ref_node *node; node = rb_entry(n, struct btrfs_delayed_ref_node, rb_node); - if (node->bytenr != head->node.bytenr) - break; - WARN_ON(node->is_head); - + n = rb_next(n); if (node->seq > seq) continue; @@ -612,10 +611,10 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq, WARN_ON(1); } if (ret) - return ret; + break; } - - return 0; + spin_unlock(&head->lock); + return ret; } /* @@ -882,15 +881,15 @@ again: btrfs_put_delayed_ref(&head->node); goto again; } + spin_unlock(&delayed_refs->lock); ret = __add_delayed_refs(head, time_seq, &prefs_delayed); mutex_unlock(&head->mutex); - if (ret) { - spin_unlock(&delayed_refs->lock); + if (ret) goto out; - } + } else { + spin_unlock(&delayed_refs->lock); } - spin_unlock(&delayed_refs->lock); } if (path->slots[0]) { |