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-rw-r--r--block/blk-timeout.c26
1 files changed, 17 insertions, 9 deletions
diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index 764ecf9..a05e367 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;
}
}
@@ -156,12 +158,17 @@ void blk_timeout_work(struct work_struct *work)
*/
void blk_abort_request(struct request *req)
{
- if (blk_mark_rq_complete(req))
- return;
-
if (req->q->mq_ops) {
- blk_mq_rq_timed_out(req, false);
+ /*
+ * All we need to ensure is that timeout scan takes place
+ * immediately and that scan sees the new timeout value.
+ * No need for fancy synchronizations.
+ */
+ blk_rq_set_deadline(req, jiffies);
+ mod_timer(&req->q->timeout, 0);
} else {
+ if (blk_mark_rq_complete(req))
+ return;
blk_delete_timer(req);
blk_rq_timed_out(req);
}
@@ -208,7 +215,8 @@ void blk_add_timer(struct request *req)
if (!req->timeout)
req->timeout = q->rq_timeout;
- WRITE_ONCE(req->deadline, jiffies + req->timeout);
+ blk_rq_set_deadline(req, jiffies + req->timeout);
+ req->rq_flags &= ~RQF_MQ_TIMEOUT_EXPIRED;
/*
* Only the non-mq case needs to add the request to a protected list.
@@ -222,7 +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)) {
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