41 void extent_map_tree_init(struct extent_map_tree *tree, gfp_t mask)  in extent_map_tree_init()  argument
43 	tree->map.rb_node = NULL;  in extent_map_tree_init()
44 	spin_lock_init(&tree->lock);  in extent_map_tree_init()
219 int add_extent_mapping(struct extent_map_tree *tree,  in add_extent_mapping()  argument
227 	exist = lookup_extent_mapping(tree, em->start, em->len);  in add_extent_mapping()
233 	assert_spin_locked(&tree->lock);  in add_extent_mapping()
234 	rb = tree_insert(&tree->map, em->start, &em->rb_node);  in add_extent_mapping()
251 			rb_erase(&merge->rb_node, &tree->map);  in add_extent_mapping()
261 		rb_erase(&merge->rb_node, &tree->map);  in add_extent_mapping()
289 struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree,  in lookup_extent_mapping()  argument
298 	assert_spin_locked(&tree->lock);  in lookup_extent_mapping()
299 	rb_node = __tree_search(&tree->map, start, &prev, &next);  in lookup_extent_mapping()
340 int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em)  in remove_extent_mapping()  argument
345 	assert_spin_locked(&tree->lock);  in remove_extent_mapping()
346 	rb_erase(&em->rb_node, &tree->map);  in remove_extent_mapping()