Btrfs: Replace the transaction work queue with kthreads

This creates one kthread for commits and one kthread for
deleting old snapshots.  All the work queues are removed.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 5edbcc09b3cc..40f0e0cb804b 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1352,6 +1352,8 @@ again:
                                                 free_extent_buffer(tmp);
                                         goto again;
                                 } else {
+                                        if (tmp)
+                                                free_extent_buffer(tmp);
                                         b = read_node_slot(root, b, slot);
                                 }
                         }
@@ -3048,7 +3050,8 @@ int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path)
                 free_extent_buffer(c);
                 path->nodes[level] = next;
                 path->slots[level] = 0;
-                path->locks[level] = 1;
+                if (!path->skip_locking)
+                        path->locks[level] = 1;
                 if (!level)
                         break;
                 if (level == 1 && path->locks[1] && path->reada)