203 	struct memlist *prev, *next;  in memlist_add_span()  local
231 	for (prev = NULL, next = *curmemlistp; next != NULL;  in memlist_add_span()
232 	    prev = next, next = next->ml_next) {  in memlist_add_span()
233 		if (address > (next->ml_address + next->ml_size))  in memlist_add_span()
243 		if ((address + bytes) == next->ml_address) {  in memlist_add_span()
246 			next->ml_address = address;  in memlist_add_span()
247 			next->ml_size += bytes;  in memlist_add_span()
255 		if (address == (next->ml_address + next->ml_size)) {  in memlist_add_span()
258 			if (next->ml_next) {  in memlist_add_span()
263 				    next->ml_next->ml_address) {  in memlist_add_span()
270 				    next->ml_next->ml_address) {  in memlist_add_span()
271 					struct memlist *mlp = next->ml_next;  in memlist_add_span()
273 					if (next == *curmemlistp)  in memlist_add_span()
274 						*curmemlistp = next->ml_next;  in memlist_add_span()
276 					mlp->ml_address = next->ml_address;  in memlist_add_span()
277 					mlp->ml_size += next->ml_size;  in memlist_add_span()
280 					if (next->ml_prev)  in memlist_add_span()
281 						next->ml_prev->ml_next = mlp;  in memlist_add_span()
282 					mlp->ml_prev = next->ml_prev;  in memlist_add_span()
284 					memlist_free_one(next);  in memlist_add_span()
289 			next->ml_size += bytes;  in memlist_add_span()
295 		if ((address + bytes) > next->ml_address) {  in memlist_add_span()
304 		dst->ml_next = next;  in memlist_add_span()
305 		next->ml_prev = dst;  in memlist_add_span()
337 	struct memlist *dst, *next;  in memlist_delete_span()  local
342 	for (next = *curmemlistp; next != NULL; next = next->ml_next) {  in memlist_delete_span()
343 		if ((address >= next->ml_address) &&  in memlist_delete_span()
344 		    (address < next->ml_address + next->ml_size))  in memlist_delete_span()
351 	if (next == NULL) {  in memlist_delete_span()
358 	if (address + bytes > next->ml_address + next->ml_size) {  in memlist_delete_span()
365 	if (address == next->ml_address) {  in memlist_delete_span()
369 		if (bytes == next->ml_size) {  in memlist_delete_span()
370 			if (next == *curmemlistp)  in memlist_delete_span()
371 				*curmemlistp = next->ml_next;  in memlist_delete_span()
372 			if (next->ml_prev != NULL)  in memlist_delete_span()
373 				next->ml_prev->ml_next = next->ml_next;  in memlist_delete_span()
374 			if (next->ml_next != NULL)  in memlist_delete_span()
375 				next->ml_next->ml_prev = next->ml_prev;  in memlist_delete_span()
377 			memlist_free_one(next);  in memlist_delete_span()
382 			next->ml_address += bytes;  in memlist_delete_span()
383 			next->ml_size -= bytes;  in memlist_delete_span()
391 	if (address + bytes == next->ml_address + next->ml_size) {  in memlist_delete_span()
395 		next->ml_size -= bytes;  in memlist_delete_span()
418 		    (next->ml_address + next->ml_size) - dst->ml_address;  in memlist_delete_span()
419 		next->ml_size = address - next->ml_address;  in memlist_delete_span()
429 		dst->ml_next = next->ml_next;  in memlist_delete_span()
430 		dst->ml_prev = next;  in memlist_delete_span()
432 		if (next->ml_next != NULL)  in memlist_delete_span()
433 			next->ml_next->ml_prev = dst;  in memlist_delete_span()
434 		next->ml_next = dst;  in memlist_delete_span()