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author | Jens Axboe <axboe@kernel.dk> | 2013-11-08 20:08:12 +0400 |
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committer | Jens Axboe <axboe@kernel.dk> | 2013-11-08 20:08:12 +0400 |
commit | e37459b8e2c7db6735e39e019e448b76e5e77647 (patch) | |
tree | a3f0944db87a8ae0d41e5acbbbabc1e7ef534d1b /block/blk-timeout.c | |
parent | c7d1ba417c7cb7297d14dd47a390ec90ce548d5c (diff) | |
parent | e7e245000110a7794de8f925b9edc06a9c852f80 (diff) | |
download | linux-e37459b8e2c7db6735e39e019e448b76e5e77647.tar.xz |
Merge branch 'blk-mq/core' into for-3.13/core
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Conflicts:
block/blk-timeout.c
Diffstat (limited to 'block/blk-timeout.c')
-rw-r--r-- | block/blk-timeout.c | 74 |
1 files changed, 47 insertions, 27 deletions
diff --git a/block/blk-timeout.c b/block/blk-timeout.c index abf725c655fc..bba81c9348e1 100644 --- a/block/blk-timeout.c +++ b/block/blk-timeout.c @@ -7,6 +7,7 @@ #include <linux/fault-inject.h> #include "blk.h" +#include "blk-mq.h" #ifdef CONFIG_FAIL_IO_TIMEOUT @@ -88,10 +89,18 @@ static void blk_rq_timed_out(struct request *req) ret = q->rq_timed_out_fn(req); switch (ret) { case BLK_EH_HANDLED: - __blk_complete_request(req); + /* Can we use req->errors here? */ + if (q->mq_ops) + blk_mq_complete_request(req, req->errors); + else + __blk_complete_request(req); break; case BLK_EH_RESET_TIMER: - blk_add_timer(req); + if (q->mq_ops) + blk_mq_add_timer(req); + else + blk_add_timer(req); + blk_clear_rq_complete(req); break; case BLK_EH_NOT_HANDLED: @@ -108,6 +117,23 @@ static void blk_rq_timed_out(struct request *req) } } +void blk_rq_check_expired(struct request *rq, unsigned long *next_timeout, + unsigned int *next_set) +{ + if (time_after_eq(jiffies, rq->deadline)) { + list_del_init(&rq->timeout_list); + + /* + * Check if we raced with end io completion + */ + if (!blk_mark_rq_complete(rq)) + blk_rq_timed_out(rq); + } else if (!*next_set || time_after(*next_timeout, rq->deadline)) { + *next_timeout = rq->deadline; + *next_set = 1; + } +} + void blk_rq_timed_out_timer(unsigned long data) { struct request_queue *q = (struct request_queue *) data; @@ -117,21 +143,8 @@ void blk_rq_timed_out_timer(unsigned long data) spin_lock_irqsave(q->queue_lock, flags); - list_for_each_entry_safe(rq, tmp, &q->timeout_list, timeout_list) { - if (time_after_eq(jiffies, rq->deadline)) { - list_del_init(&rq->timeout_list); - - /* - * Check if we raced with end io completion - */ - if (blk_mark_rq_complete(rq)) - continue; - blk_rq_timed_out(rq); - } else if (!next_set || time_after(next, rq->deadline)) { - next = rq->deadline; - next_set = 1; - } - } + list_for_each_entry_safe(rq, tmp, &q->timeout_list, timeout_list) + blk_rq_check_expired(rq, &next, &next_set); if (next_set) mod_timer(&q->timeout, round_jiffies_up(next)); @@ -157,15 +170,7 @@ void blk_abort_request(struct request *req) } EXPORT_SYMBOL_GPL(blk_abort_request); -/** - * blk_add_timer - Start timeout timer for a single request - * @req: request that is about to start running. - * - * Notes: - * Each request has its own timer, and as it is added to the queue, we - * set up the timer. When the request completes, we cancel the timer. - */ -void blk_add_timer(struct request *req) +void __blk_add_timer(struct request *req, struct list_head *timeout_list) { struct request_queue *q = req->q; unsigned long expiry; @@ -183,7 +188,8 @@ void blk_add_timer(struct request *req) req->timeout = q->rq_timeout; req->deadline = jiffies + req->timeout; - list_add_tail(&req->timeout_list, &q->timeout_list); + if (timeout_list) + list_add_tail(&req->timeout_list, timeout_list); /* * If the timer isn't already pending or this timeout is earlier @@ -195,5 +201,19 @@ void blk_add_timer(struct request *req) if (!timer_pending(&q->timeout) || time_before(expiry, q->timeout.expires)) mod_timer(&q->timeout, expiry); + +} + +/** + * blk_add_timer - Start timeout timer for a single request + * @req: request that is about to start running. + * + * Notes: + * Each request has its own timer, and as it is added to the queue, we + * set up the timer. When the request completes, we cancel the timer. + */ +void blk_add_timer(struct request *req) +{ + __blk_add_timer(req, &req->q->timeout_list); } |