262 	struct extent_status *es1 = NULL;  in __es_find_extent_range()  local
273 		es1 = tree->cache_es;  in __es_find_extent_range()
274 		if (in_range(lblk, es1->es_lblk, es1->es_len)) {  in __es_find_extent_range()
276 				 lblk, es1->es_lblk, es1->es_len,  in __es_find_extent_range()
277 				 ext4_es_pblock(es1), ext4_es_status(es1));  in __es_find_extent_range()
282 	es1 = __es_tree_search(&tree->root, lblk);  in __es_find_extent_range()
285 	if (es1 && !matching_fn(es1)) {  in __es_find_extent_range()
286 		while ((node = rb_next(&es1->rb_node)) != NULL) {  in __es_find_extent_range()
287 			es1 = rb_entry(node, struct extent_status, rb_node);  in __es_find_extent_range()
288 			if (es1->es_lblk > end) {  in __es_find_extent_range()
289 				es1 = NULL;  in __es_find_extent_range()
292 			if (matching_fn(es1))  in __es_find_extent_range()
297 	if (es1 && matching_fn(es1)) {  in __es_find_extent_range()
298 		tree->cache_es = es1;  in __es_find_extent_range()
299 		es->es_lblk = es1->es_lblk;  in __es_find_extent_range()
300 		es->es_len = es1->es_len;  in __es_find_extent_range()
301 		es->es_pblk = es1->es_pblk;  in __es_find_extent_range()
505 static int ext4_es_can_be_merged(struct extent_status *es1,  in ext4_es_can_be_merged()  argument
508 	if (ext4_es_type(es1) != ext4_es_type(es2))  in ext4_es_can_be_merged()
511 	if (((__u64) es1->es_len) + es2->es_len > EXT_MAX_BLOCKS) {  in ext4_es_can_be_merged()
515 			es1->es_len, es2->es_len, EXT_MAX_BLOCKS);  in ext4_es_can_be_merged()
520 	if (((__u64) es1->es_lblk) + es1->es_len != es2->es_lblk)  in ext4_es_can_be_merged()
523 	if ((ext4_es_is_written(es1) || ext4_es_is_unwritten(es1)) &&  in ext4_es_can_be_merged()
524 	    (ext4_es_pblock(es1) + es1->es_len == ext4_es_pblock(es2)))  in ext4_es_can_be_merged()
527 	if (ext4_es_is_hole(es1))  in ext4_es_can_be_merged()
531 	if (ext4_es_is_delayed(es1) && !ext4_es_is_unwritten(es1))  in ext4_es_can_be_merged()
541 	struct extent_status *es1;  in ext4_es_try_to_merge_left()  local
548 	es1 = rb_entry(node, struct extent_status, rb_node);  in ext4_es_try_to_merge_left()
549 	if (ext4_es_can_be_merged(es1, es)) {  in ext4_es_try_to_merge_left()
550 		es1->es_len += es->es_len;  in ext4_es_try_to_merge_left()
552 			ext4_es_set_referenced(es1);  in ext4_es_try_to_merge_left()
555 		es = es1;  in ext4_es_try_to_merge_left()
565 	struct extent_status *es1;  in ext4_es_try_to_merge_right()  local
572 	es1 = rb_entry(node, struct extent_status, rb_node);  in ext4_es_try_to_merge_right()
573 	if (ext4_es_can_be_merged(es, es1)) {  in ext4_es_try_to_merge_right()
574 		es->es_len += es1->es_len;  in ext4_es_try_to_merge_right()
575 		if (ext4_es_is_referenced(es1))  in ext4_es_try_to_merge_right()
578 		ext4_es_free_extent(inode, es1);  in ext4_es_try_to_merge_right()
921 	struct extent_status *es1 = NULL;  in ext4_es_lookup_extent()  local
937 		es1 = tree->cache_es;  in ext4_es_lookup_extent()
938 		if (in_range(lblk, es1->es_lblk, es1->es_len)) {  in ext4_es_lookup_extent()
940 				 lblk, es1->es_lblk, es1->es_len);  in ext4_es_lookup_extent()
948 		es1 = rb_entry(node, struct extent_status, rb_node);  in ext4_es_lookup_extent()
949 		if (lblk < es1->es_lblk)  in ext4_es_lookup_extent()
951 		else if (lblk > ext4_es_end(es1))  in ext4_es_lookup_extent()
962 		BUG_ON(!es1);  in ext4_es_lookup_extent()
963 		es->es_lblk = es1->es_lblk;  in ext4_es_lookup_extent()
964 		es->es_len = es1->es_len;  in ext4_es_lookup_extent()
965 		es->es_pblk = es1->es_pblk;  in ext4_es_lookup_extent()
966 		if (!ext4_es_is_referenced(es1))  in ext4_es_lookup_extent()
967 			ext4_es_set_referenced(es1);  in ext4_es_lookup_extent()
970 			node = rb_next(&es1->rb_node);  in ext4_es_lookup_extent()
972 				es1 = rb_entry(node, struct extent_status,  in ext4_es_lookup_extent()
974 				*next_lblk = es1->es_lblk;  in ext4_es_lookup_extent()