Merge tag 'iommu-fixes-v3.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / fs / btrfs / delayed-ref.c

diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index ee18198..66e4f29 100644 (file)
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -664,6 +664,9 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
                                   num_bytes, parent, ref_root, level, action,
                                   for_cow);
        BUG_ON(ret);
+       if (!need_ref_seq(for_cow, ref_root) &&
+           waitqueue_active(&delayed_refs->seq_wait))
+               wake_up(&delayed_refs->seq_wait);
        spin_unlock(&delayed_refs->lock);
        return 0;
 }
@@ -712,6 +715,9 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
                                   num_bytes, parent, ref_root, owner, offset,
                                   action, for_cow);
        BUG_ON(ret);
+       if (!need_ref_seq(for_cow, ref_root) &&
+           waitqueue_active(&delayed_refs->seq_wait))
+               wake_up(&delayed_refs->seq_wait);
        spin_unlock(&delayed_refs->lock);
        return 0;
 }
@@ -739,6 +745,8 @@ int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info,
                                   extent_op->is_data);
        BUG_ON(ret);
 
+       if (waitqueue_active(&delayed_refs->seq_wait))
+               wake_up(&delayed_refs->seq_wait);
        spin_unlock(&delayed_refs->lock);
        return 0;
 }