249 	struct extent_status *es1 = NULL;  in ext4_es_find_delayed_extent_range()  local
262 		es1 = tree->cache_es;  in ext4_es_find_delayed_extent_range()
263 		if (in_range(lblk, es1->es_lblk, es1->es_len)) {  in ext4_es_find_delayed_extent_range()
265 				 lblk, es1->es_lblk, es1->es_len,  in ext4_es_find_delayed_extent_range()
266 				 ext4_es_pblock(es1), ext4_es_status(es1));  in ext4_es_find_delayed_extent_range()
271 	es1 = __es_tree_search(&tree->root, lblk);  in ext4_es_find_delayed_extent_range()
274 	if (es1 && !ext4_es_is_delayed(es1)) {  in ext4_es_find_delayed_extent_range()
275 		while ((node = rb_next(&es1->rb_node)) != NULL) {  in ext4_es_find_delayed_extent_range()
276 			es1 = rb_entry(node, struct extent_status, rb_node);  in ext4_es_find_delayed_extent_range()
277 			if (es1->es_lblk > end) {  in ext4_es_find_delayed_extent_range()
278 				es1 = NULL;  in ext4_es_find_delayed_extent_range()
281 			if (ext4_es_is_delayed(es1))  in ext4_es_find_delayed_extent_range()
286 	if (es1 && ext4_es_is_delayed(es1)) {  in ext4_es_find_delayed_extent_range()
287 		tree->cache_es = es1;  in ext4_es_find_delayed_extent_range()
288 		es->es_lblk = es1->es_lblk;  in ext4_es_find_delayed_extent_range()
289 		es->es_len = es1->es_len;  in ext4_es_find_delayed_extent_range()
290 		es->es_pblk = es1->es_pblk;  in ext4_es_find_delayed_extent_range()
380 static int ext4_es_can_be_merged(struct extent_status *es1,  in ext4_es_can_be_merged()  argument
383 	if (ext4_es_type(es1) != ext4_es_type(es2))  in ext4_es_can_be_merged()
386 	if (((__u64) es1->es_len) + es2->es_len > EXT_MAX_BLOCKS) {  in ext4_es_can_be_merged()
390 			es1->es_len, es2->es_len, EXT_MAX_BLOCKS);  in ext4_es_can_be_merged()
395 	if (((__u64) es1->es_lblk) + es1->es_len != es2->es_lblk)  in ext4_es_can_be_merged()
398 	if ((ext4_es_is_written(es1) || ext4_es_is_unwritten(es1)) &&  in ext4_es_can_be_merged()
399 	    (ext4_es_pblock(es1) + es1->es_len == ext4_es_pblock(es2)))  in ext4_es_can_be_merged()
402 	if (ext4_es_is_hole(es1))  in ext4_es_can_be_merged()
406 	if (ext4_es_is_delayed(es1) && !ext4_es_is_unwritten(es1))  in ext4_es_can_be_merged()
416 	struct extent_status *es1;  in ext4_es_try_to_merge_left()  local
423 	es1 = rb_entry(node, struct extent_status, rb_node);  in ext4_es_try_to_merge_left()
424 	if (ext4_es_can_be_merged(es1, es)) {  in ext4_es_try_to_merge_left()
425 		es1->es_len += es->es_len;  in ext4_es_try_to_merge_left()
427 			ext4_es_set_referenced(es1);  in ext4_es_try_to_merge_left()
430 		es = es1;  in ext4_es_try_to_merge_left()
440 	struct extent_status *es1;  in ext4_es_try_to_merge_right()  local
447 	es1 = rb_entry(node, struct extent_status, rb_node);  in ext4_es_try_to_merge_right()
448 	if (ext4_es_can_be_merged(es, es1)) {  in ext4_es_try_to_merge_right()
449 		es->es_len += es1->es_len;  in ext4_es_try_to_merge_right()
450 		if (ext4_es_is_referenced(es1))  in ext4_es_try_to_merge_right()
453 		ext4_es_free_extent(inode, es1);  in ext4_es_try_to_merge_right()
784 	struct extent_status *es1 = NULL;  in ext4_es_lookup_extent()  local
797 		es1 = tree->cache_es;  in ext4_es_lookup_extent()
798 		if (in_range(lblk, es1->es_lblk, es1->es_len)) {  in ext4_es_lookup_extent()
800 				 lblk, es1->es_lblk, es1->es_len);  in ext4_es_lookup_extent()
808 		es1 = rb_entry(node, struct extent_status, rb_node);  in ext4_es_lookup_extent()
809 		if (lblk < es1->es_lblk)  in ext4_es_lookup_extent()
811 		else if (lblk > ext4_es_end(es1))  in ext4_es_lookup_extent()
822 		BUG_ON(!es1);  in ext4_es_lookup_extent()
823 		es->es_lblk = es1->es_lblk;  in ext4_es_lookup_extent()
824 		es->es_len = es1->es_len;  in ext4_es_lookup_extent()
825 		es->es_pblk = es1->es_pblk;  in ext4_es_lookup_extent()
826 		if (!ext4_es_is_referenced(es1))  in ext4_es_lookup_extent()
827 			ext4_es_set_referenced(es1);  in ext4_es_lookup_extent()