138 	struct zbud_header *zhdr = page_address(page);  in init_zbud_page()  local
139 	zhdr->first_chunks = 0;  in init_zbud_page()
140 	zhdr->last_chunks = 0;  in init_zbud_page()
141 	INIT_LIST_HEAD(&zhdr->buddy);  in init_zbud_page()
142 	return zhdr;  in init_zbud_page()
146 static void free_zbud_page(struct zbud_header *zhdr)  in free_zbud_page()  argument
148 	__free_page(virt_to_page(zhdr));  in free_zbud_page()
155 static unsigned long encode_handle(struct zbud_header *zhdr, enum buddy bud)  in encode_handle()  argument
165 	handle = (unsigned long)zhdr;  in encode_handle()
170 		handle += PAGE_SIZE - (zhdr->last_chunks  << CHUNK_SHIFT);  in encode_handle()
181 static int num_free_chunks(struct zbud_header *zhdr)  in num_free_chunks()  argument
187 	return NCHUNKS - zhdr->first_chunks - zhdr->last_chunks;  in num_free_chunks()
250 	struct zbud_header *zhdr = NULL;  in zbud_alloc()  local
264 			zhdr = list_first_entry(&pool->unbuddied[i],  in zbud_alloc()
266 			list_del(&zhdr->buddy);  in zbud_alloc()
267 			if (zhdr->first_chunks == 0)  in zbud_alloc()
282 	zhdr = init_zbud_page(page);  in zbud_alloc()
287 		zhdr->first_chunks = chunks;  in zbud_alloc()
289 		zhdr->last_chunks = chunks;  in zbud_alloc()
291 	if (zhdr->first_chunks == 0 || zhdr->last_chunks == 0) {  in zbud_alloc()
293 		freechunks = num_free_chunks(zhdr);  in zbud_alloc()
294 		list_add(&zhdr->buddy, &pool->unbuddied[freechunks]);  in zbud_alloc()
297 		list_add(&zhdr->buddy, &pool->buddied);  in zbud_alloc()
300 	*handle = encode_handle(zhdr, bud);  in zbud_alloc()
313 	struct zbud_header *zhdr;  in zbud_free()  local
317 	zhdr = handle_to_zbud_header(handle);  in zbud_free()
321 		zhdr->last_chunks = 0;  in zbud_free()
323 		zhdr->first_chunks = 0;  in zbud_free()
326 	list_del(&zhdr->buddy);  in zbud_free()
328 	if (zhdr->first_chunks == 0 && zhdr->last_chunks == 0) {  in zbud_free()
330 		free_zbud_page(zhdr);  in zbud_free()
334 		freechunks = num_free_chunks(zhdr);  in zbud_free()
335 		list_add(&zhdr->buddy, &pool->unbuddied[freechunks]);  in zbud_free()