Btrfs: make the chunk allocator completely tree lockless

[linux-imx.git] / fs / btrfs / transaction.c

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index bcfa32c91b5dd7dc4ea84aa2e5e6598f45b1bd10..d58cce77fc6c581625c3dd0449c83b6836bf4894 100644 (file)
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -63,6 +63,14 @@ static void put_transaction(struct btrfs_transaction *transaction)
        if (atomic_dec_and_test(&transaction->use_count)) {
                BUG_ON(!list_empty(&transaction->list));
                WARN_ON(transaction->delayed_refs.root.rb_node);
+               while (!list_empty(&transaction->pending_chunks)) {
+                       struct extent_map *em;
+
+                       em = list_first_entry(&transaction->pending_chunks,
+                                             struct extent_map, list);
+                       list_del_init(&em->list);
+                       free_extent_map(em);
+               }
                kmem_cache_free(btrfs_transaction_cachep, transaction);
        }
 }
@@ -202,6 +210,7 @@ loop:
 
        INIT_LIST_HEAD(&cur_trans->pending_snapshots);
        INIT_LIST_HEAD(&cur_trans->ordered_operations);
+       INIT_LIST_HEAD(&cur_trans->pending_chunks);
        list_add_tail(&cur_trans->list, &fs_info->trans_list);
        extent_io_tree_init(&cur_trans->dirty_pages,
                             fs_info->btree_inode->i_mapping);