36 void extent_map_tree_init(struct extent_map_tree *tree)  in extent_map_tree_init()  argument
38 	tree->map = RB_ROOT_CACHED;  in extent_map_tree_init()
39 	INIT_LIST_HEAD(&tree->modified_extents);  in extent_map_tree_init()
40 	rwlock_init(&tree->lock);  in extent_map_tree_init()
235 static void try_merge_map(struct extent_map_tree *tree, struct extent_map *em)  in try_merge_map()  argument
265 			rb_erase_cached(&merge->rb_node, &tree->map);  in try_merge_map()
277 		rb_erase_cached(&merge->rb_node, &tree->map);  in try_merge_map()
296 int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,  in unpin_extent_cache()  argument
303 	write_lock(&tree->lock);  in unpin_extent_cache()
304 	em = lookup_extent_mapping(tree, start, len);  in unpin_extent_cache()
321 	try_merge_map(tree, em);  in unpin_extent_cache()
330 	write_unlock(&tree->lock);  in unpin_extent_cache()
335 void clear_em_logging(struct extent_map_tree *tree, struct extent_map *em)  in clear_em_logging()  argument
339 		try_merge_map(tree, em);  in clear_em_logging()
342 static inline void setup_extent_mapping(struct extent_map_tree *tree,  in setup_extent_mapping()  argument
351 		list_move(&em->list, &tree->modified_extents);  in setup_extent_mapping()
353 		try_merge_map(tree, em);  in setup_extent_mapping()
400 int add_extent_mapping(struct extent_map_tree *tree,  in add_extent_mapping()  argument
405 	lockdep_assert_held_write(&tree->lock);  in add_extent_mapping()
407 	ret = tree_insert(&tree->map, em);  in add_extent_mapping()
411 	setup_extent_mapping(tree, em, modified);  in add_extent_mapping()
421 __lookup_extent_mapping(struct extent_map_tree *tree,  in __lookup_extent_mapping()  argument
430 	rb_node = __tree_search(&tree->map.rb_root, start, &prev, &next);  in __lookup_extent_mapping()
460 struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree,  in lookup_extent_mapping()  argument
463 	return __lookup_extent_mapping(tree, start, len, 1);  in lookup_extent_mapping()
477 struct extent_map *search_extent_mapping(struct extent_map_tree *tree,  in search_extent_mapping()  argument
480 	return __lookup_extent_mapping(tree, start, len, 0);  in search_extent_mapping()
491 void remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em)  in remove_extent_mapping()  argument
494 	rb_erase_cached(&em->rb_node, &tree->map);  in remove_extent_mapping()
502 void replace_extent_mapping(struct extent_map_tree *tree,  in replace_extent_mapping()  argument
511 	rb_replace_node_cached(&cur->rb_node, &new->rb_node, &tree->map);  in replace_extent_mapping()
514 	setup_extent_mapping(tree, new, modified);  in replace_extent_mapping()