Btrfs: Use assert_spin_locked instead of spin_trylock

On UP systems spin_trylock always succeeds

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

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 8a502ee2f23..954b047639a 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -208,7 +208,7 @@ int add_extent_mapping(struct extent_map_tree *tree,
         struct extent_map *merge = NULL;
         struct rb_node *rb;
 
-        BUG_ON(spin_trylock(&tree->lock));
+        assert_spin_locked(&tree->lock);
         rb = tree_insert(&tree->map, em->start, &em->rb_node);
         if (rb) {
                 ret = -EEXIST;
@@ -270,7 +270,7 @@ struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree,
         struct rb_node *next = NULL;
         u64 end = range_end(start, len);
 
-        BUG_ON(spin_trylock(&tree->lock));
+        assert_spin_locked(&tree->lock);
         rb_node = __tree_search(&tree->map, start, &prev, &next);
         if (!rb_node && prev) {
                 em = rb_entry(prev, struct extent_map, rb_node);
@@ -317,7 +317,7 @@ int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em)
         int ret = 0;
 
         WARN_ON(test_bit(EXTENT_FLAG_PINNED, &em->flags));
-        BUG_ON(spin_trylock(&tree->lock));
+        assert_spin_locked(&tree->lock);
         rb_erase(&em->rb_node, &tree->map);
         em->in_tree = 0;
         return ret;