201 	struct extent_node *en;  in __attach_extent_node()  local
203 	en = kmem_cache_alloc(extent_node_slab, GFP_ATOMIC);  in __attach_extent_node()
204 	if (!en)  in __attach_extent_node()
207 	en->ei = *ei;  in __attach_extent_node()
208 	INIT_LIST_HEAD(&en->list);  in __attach_extent_node()
209 	en->et = et;  in __attach_extent_node()
211 	rb_link_node(&en->rb_node, parent, p);  in __attach_extent_node()
212 	rb_insert_color(&en->rb_node, &et->root);  in __attach_extent_node()
215 	return en;  in __attach_extent_node()
219 				struct extent_tree *et, struct extent_node *en)  in __detach_extent_node()  argument
221 	rb_erase(&en->rb_node, &et->root);  in __detach_extent_node()
225 	if (et->cached_en == en)  in __detach_extent_node()
227 	kmem_cache_free(extent_node_slab, en);  in __detach_extent_node()
237 			struct extent_tree *et, struct extent_node *en)  in __release_extent_node()  argument
240 	f2fs_bug_on(sbi, list_empty(&en->list));  in __release_extent_node()
241 	list_del_init(&en->list);  in __release_extent_node()
244 	__detach_extent_node(sbi, et, en);  in __release_extent_node()
282 	struct extent_node *en;  in __init_extent_tree()  local
284 	en = __attach_extent_node(sbi, et, ei, NULL, p);  in __init_extent_tree()
285 	if (!en)  in __init_extent_tree()
288 	et->largest = en->ei;  in __init_extent_tree()
289 	et->cached_en = en;  in __init_extent_tree()
290 	return en;  in __init_extent_tree()
297 	struct extent_node *en;  in __free_extent_tree()  local
303 		en = rb_entry(node, struct extent_node, rb_node);  in __free_extent_tree()
304 		__release_extent_node(sbi, et, en);  in __free_extent_tree()
326 	struct extent_node *en;  in __f2fs_init_extent_tree()  local
349 	en = __init_extent_tree(sbi, et, &ei);  in __f2fs_init_extent_tree()
350 	if (en) {  in __f2fs_init_extent_tree()
352 		list_add_tail(&en->list, &sbi->extent_list);  in __f2fs_init_extent_tree()
375 	struct extent_node *en;  in f2fs_lookup_extent_tree()  local
392 	en = (struct extent_node *)f2fs_lookup_rb_tree(&et->root,  in f2fs_lookup_extent_tree()
394 	if (!en)  in f2fs_lookup_extent_tree()
397 	if (en == et->cached_en)  in f2fs_lookup_extent_tree()
402 	*ei = en->ei;  in f2fs_lookup_extent_tree()
404 	if (!list_empty(&en->list)) {  in f2fs_lookup_extent_tree()
405 		list_move_tail(&en->list, &sbi->extent_list);  in f2fs_lookup_extent_tree()
406 		et->cached_en = en;  in f2fs_lookup_extent_tree()
423 	struct extent_node *en = NULL;  in __try_merge_extent_node()  local
428 		en = prev_ex;  in __try_merge_extent_node()
435 		if (en)  in __try_merge_extent_node()
438 		en = next_ex;  in __try_merge_extent_node()
441 	if (!en)  in __try_merge_extent_node()
444 	__try_update_largest_extent(et, en);  in __try_merge_extent_node()
447 	if (!list_empty(&en->list)) {  in __try_merge_extent_node()
448 		list_move_tail(&en->list, &sbi->extent_list);  in __try_merge_extent_node()
449 		et->cached_en = en;  in __try_merge_extent_node()
452 	return en;  in __try_merge_extent_node()
462 	struct extent_node *en = NULL;  in __insert_extent_tree()  local
472 	en = __attach_extent_node(sbi, et, ei, parent, p);  in __insert_extent_tree()
473 	if (!en)  in __insert_extent_tree()
476 	__try_update_largest_extent(et, en);  in __insert_extent_tree()
480 	list_add_tail(&en->list, &sbi->extent_list);  in __insert_extent_tree()
481 	et->cached_en = en;  in __insert_extent_tree()
483 	return en;  in __insert_extent_tree()
491 	struct extent_node *en = NULL, *en1 = NULL;  in f2fs_update_extent_tree_range()  local
521 	en = (struct extent_node *)f2fs_lookup_rb_tree_ret(&et->root,  in f2fs_update_extent_tree_range()
526 	if (!en)  in f2fs_update_extent_tree_range()
527 		en = next_en;  in f2fs_update_extent_tree_range()
530 	while (en && en->ei.fofs < end) {  in f2fs_update_extent_tree_range()
536 		dei = en->ei;  in f2fs_update_extent_tree_range()
541 			en->ei.len = pos - en->ei.fofs;  in f2fs_update_extent_tree_range()
542 			prev_en = en;  in f2fs_update_extent_tree_range()
555 				en->ei.fofs = end;  in f2fs_update_extent_tree_range()
556 				en->ei.blk += end - dei.fofs;  in f2fs_update_extent_tree_range()
557 				en->ei.len -= end - dei.fofs;  in f2fs_update_extent_tree_range()
558 				next_en = en;  in f2fs_update_extent_tree_range()
564 			struct rb_node *node = rb_next(&en->rb_node);  in f2fs_update_extent_tree_range()
571 			__try_update_largest_extent(et, en);  in f2fs_update_extent_tree_range()
573 			__release_extent_node(sbi, et, en);  in f2fs_update_extent_tree_range()
584 		en = next_en;  in f2fs_update_extent_tree_range()
622 	struct extent_node *en;  in f2fs_shrink_extent_tree()  local
667 		en = list_first_entry(&sbi->extent_list,  in f2fs_shrink_extent_tree()
669 		et = en->et;  in f2fs_shrink_extent_tree()
672 			list_move_tail(&en->list, &sbi->extent_list);  in f2fs_shrink_extent_tree()
676 		list_del_init(&en->list);  in f2fs_shrink_extent_tree()
679 		__detach_extent_node(sbi, et, en);  in f2fs_shrink_extent_tree()