1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/fault-inject.h>
11 #include "blk-mq.h"
23 bool __blk_should_fake_timeout(struct request_queue *q)  in __blk_should_fake_timeout()  argument
43 	int set = test_bit(QUEUE_FLAG_FAIL_IO, &disk->queue->queue_flags);  in part_timeout_show()
55 		struct request_queue *q = disk->queue;  in part_timeout_store()  local
60 			blk_queue_flag_set(QUEUE_FLAG_FAIL_IO, q);  in part_timeout_store()
62 			blk_queue_flag_clear(QUEUE_FLAG_FAIL_IO, q);  in part_timeout_store()
71  * blk_abort_request - Request recovery for the specified command
75  * request by deleting the timer and calling the q's timeout function.
86 	WRITE_ONCE(req->deadline, jiffies);  in blk_abort_request()
87 	kblockd_schedule_work(&req->q->timeout_work);  in blk_abort_request()
95 	blk_timeout_mask = roundup_pow_of_two(HZ) - 1;  in blk_timeout_init()
121  * blk_add_timer - Start timeout timer for a single request
130 	struct request_queue *q = req->q;  in blk_add_timer()  local
137 	if (!req->timeout)  in blk_add_timer()
138 		req->timeout = q->rq_timeout;  in blk_add_timer()
140 	req->rq_flags &= ~RQF_TIMED_OUT;  in blk_add_timer()
142 	expiry = jiffies + req->timeout;  in blk_add_timer()
143 	WRITE_ONCE(req->deadline, expiry);  in blk_add_timer()
152 	if (!timer_pending(&q->timeout) ||  in blk_add_timer()
153 	    time_before(expiry, q->timeout.expires)) {  in blk_add_timer()
154 		unsigned long diff = q->timeout.expires - expiry;  in blk_add_timer()
163 		if (!timer_pending(&q->timeout) || (diff >= HZ / 2))  in blk_add_timer()
164 			mod_timer(&q->timeout, expiry);  in blk_add_timer()