113 	rq->part = NULL;  in blk_rq_init()
1324 static void part_round_stats_single(int cpu, struct hd_struct *part,  in part_round_stats_single()  argument
1329 	if (now == part->stamp)  in part_round_stats_single()
1332 	inflight = part_in_flight(part);  in part_round_stats_single()
1334 		__part_stat_add(cpu, part, time_in_queue,  in part_round_stats_single()
1335 				inflight * (now - part->stamp));  in part_round_stats_single()
1336 		__part_stat_add(cpu, part, io_ticks, (now - part->stamp));  in part_round_stats_single()
1338 	part->stamp = now;  in part_round_stats_single()
1357 void part_round_stats(int cpu, struct hd_struct *part)  in part_round_stats()  argument
1361 	if (part->partno)  in part_round_stats()
1362 		part_round_stats_single(cpu, &part_to_disk(part)->part0, now);  in part_round_stats()
1363 	part_round_stats_single(cpu, part, now);  in part_round_stats()
1735 static bool should_fail_request(struct hd_struct *part, unsigned int bytes)  in should_fail_request()  argument
1737 	return part->make_it_fail && should_fail(&fail_make_request, bytes);  in should_fail_request()
1752 static inline bool should_fail_request(struct hd_struct *part,  in should_fail_request()  argument
1796 	struct hd_struct *part;  in generic_make_request_checks()  local
1822 	part = bio->bi_bdev->bd_part;  in generic_make_request_checks()
1823 	if (should_fail_request(part, bio->bi_iter.bi_size) ||  in generic_make_request_checks()
1824 	    should_fail_request(&part_to_disk(part)->part0,  in generic_make_request_checks()
2146 		struct hd_struct *part;  in blk_account_io_completion()  local
2150 		part = req->part;  in blk_account_io_completion()
2151 		part_stat_add(cpu, part, sectors[rw], bytes >> 9);  in blk_account_io_completion()
2166 		struct hd_struct *part;  in blk_account_io_done()  local
2170 		part = req->part;  in blk_account_io_done()
2172 		part_stat_inc(cpu, part, ios[rw]);  in blk_account_io_done()
2173 		part_stat_add(cpu, part, ticks[rw], duration);  in blk_account_io_done()
2174 		part_round_stats(cpu, part);  in blk_account_io_done()
2175 		part_dec_in_flight(part, rw);  in blk_account_io_done()
2177 		hd_struct_put(part);  in blk_account_io_done()
2206 	struct hd_struct *part;  in blk_account_io_start()  local
2216 		part = rq->part;  in blk_account_io_start()
2217 		part_stat_inc(cpu, part, merges[rw]);  in blk_account_io_start()
2219 		part = disk_map_sector_rcu(rq->rq_disk, blk_rq_pos(rq));  in blk_account_io_start()
2220 		if (!hd_struct_try_get(part)) {  in blk_account_io_start()
2229 			part = &rq->rq_disk->part0;  in blk_account_io_start()
2230 			hd_struct_get(part);  in blk_account_io_start()
2232 		part_round_stats(cpu, part);  in blk_account_io_start()
2233 		part_inc_in_flight(part, rw);  in blk_account_io_start()
2234 		rq->part = part;  in blk_account_io_start()