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authorJens Axboe <axboe@kernel.dk>2018-01-09 14:23:42 -0700
committerJens Axboe <axboe@kernel.dk>2018-01-10 11:47:47 -0700
commit0a72e7f44964b9ada3e5c15820372e9cb119bf80 (patch)
tree08885e630c816c2d22951f29e1783c685400fcb1 /block/blk-timeout.c
parent76a86f9d027b342b8759a4b2f9f7fe046e284220 (diff)
block: add accessors for setting/querying request deadline
We reduce the resolution of request expiry, but since we're already using jiffies for this where resolution depends on the kernel configuration and since the timeout resolution is coarse anyway, that should be fine. Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-timeout.c')
-rw-r--r--block/blk-timeout.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index ebe99963386c..a05e3676d24a 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -112,7 +112,9 @@ static void blk_rq_timed_out(struct request *req)
static void blk_rq_check_expired(struct request *rq, unsigned long *next_timeout,
unsigned int *next_set)
{
- if (time_after_eq(jiffies, rq->deadline)) {
+ const unsigned long deadline = blk_rq_deadline(rq);
+
+ if (time_after_eq(jiffies, deadline)) {
list_del_init(&rq->timeout_list);
/*
@@ -120,8 +122,8 @@ static void blk_rq_check_expired(struct request *rq, unsigned long *next_timeout
*/
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;
+ } else if (!*next_set || time_after(*next_timeout, deadline)) {
+ *next_timeout = deadline;
*next_set = 1;
}
}
@@ -162,7 +164,7 @@ void blk_abort_request(struct request *req)
* immediately and that scan sees the new timeout value.
* No need for fancy synchronizations.
*/
- req->deadline = jiffies;
+ blk_rq_set_deadline(req, jiffies);
mod_timer(&req->q->timeout, 0);
} else {
if (blk_mark_rq_complete(req))
@@ -213,7 +215,7 @@ void blk_add_timer(struct request *req)
if (!req->timeout)
req->timeout = q->rq_timeout;
- req->deadline = jiffies + req->timeout;
+ blk_rq_set_deadline(req, jiffies + req->timeout);
req->rq_flags &= ~RQF_MQ_TIMEOUT_EXPIRED;
/*
@@ -228,7 +230,7 @@ void blk_add_timer(struct request *req)
* than an existing one, modify the timer. Round up to next nearest
* second.
*/
- expiry = blk_rq_timeout(round_jiffies_up(req->deadline));
+ expiry = blk_rq_timeout(round_jiffies_up(blk_rq_deadline(req)));
if (!timer_pending(&q->timeout) ||
time_before(expiry, q->timeout.expires)) {