12     struct free_arena_header *pah, *nah;  in __free_block()  local
15     nah = ah->a.next;  in __free_block()
20 	pah->a.next = nah;  in __free_block()
21 	nah->a.prev = pah;  in __free_block()
41     if (nah->a.type == ARENA_TYPE_FREE &&  in __free_block()
42 	(char *)ah + ah->a.size == (char *)nah) {  in __free_block()
43 	ah->a.size += nah->a.size;  in __free_block()
46 	nah->next_free->prev_free = nah->prev_free;  in __free_block()
47 	nah->prev_free->next_free = nah->next_free;  in __free_block()
48 	ah->a.next = nah->a.next;  in __free_block()
49 	nah->a.next->a.prev = ah;  in __free_block()
52 	nah->a.type = ARENA_TYPE_DEAD;  in __free_block()