diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/as-iosched.c | 34 |
1 files changed, 12 insertions, 22 deletions
diff --git a/block/as-iosched.c b/block/as-iosched.c index 134545b544c..c2665467950 100644 --- a/block/as-iosched.c +++ b/block/as-iosched.c @@ -131,8 +131,6 @@ struct as_data { unsigned long antic_expire; }; -#define list_entry_fifo(ptr) list_entry((ptr), struct as_rq, fifo) - /* * per-request data. */ @@ -153,12 +151,6 @@ struct as_rq { struct io_context *io_context; /* The submitting task */ - /* - * expire fifo - */ - struct list_head fifo; - unsigned long expires; - unsigned int is_sync; enum arq_state state; }; @@ -893,7 +885,7 @@ static void as_remove_queued_request(request_queue_t *q, struct request *rq) if (ad->next_arq[data_dir] == arq) ad->next_arq[data_dir] = as_find_next_arq(ad, arq); - list_del_init(&arq->fifo); + rq_fifo_clear(rq); as_del_arq_rb(ad, rq); } @@ -907,7 +899,7 @@ static void as_remove_queued_request(request_queue_t *q, struct request *rq) */ static int as_fifo_expired(struct as_data *ad, int adir) { - struct as_rq *arq; + struct request *rq; long delta_jif; delta_jif = jiffies - ad->last_check_fifo[adir]; @@ -921,9 +913,9 @@ static int as_fifo_expired(struct as_data *ad, int adir) if (list_empty(&ad->fifo_list[adir])) return 0; - arq = list_entry_fifo(ad->fifo_list[adir].next); + rq = rq_entry_fifo(ad->fifo_list[adir].next); - return time_after(jiffies, arq->expires); + return time_after(jiffies, rq_fifo_time(rq)); } /* @@ -1089,7 +1081,7 @@ static int as_dispatch_request(request_queue_t *q, int force) ad->changed_batch = 1; } ad->batch_data_dir = REQ_SYNC; - arq = list_entry_fifo(ad->fifo_list[ad->batch_data_dir].next); + arq = RQ_DATA(rq_entry_fifo(ad->fifo_list[REQ_SYNC].next)); ad->last_check_fifo[ad->batch_data_dir] = jiffies; goto dispatch_request; } @@ -1129,8 +1121,7 @@ dispatch_request: if (as_fifo_expired(ad, ad->batch_data_dir)) { fifo_expired: - arq = list_entry_fifo(ad->fifo_list[ad->batch_data_dir].next); - BUG_ON(arq == NULL); + arq = RQ_DATA(rq_entry_fifo(ad->fifo_list[ad->batch_data_dir].next)); } if (ad->changed_batch) { @@ -1186,8 +1177,8 @@ static void as_add_request(request_queue_t *q, struct request *rq) /* * set expire time (only used for reads) and add to fifo list */ - arq->expires = jiffies + ad->fifo_expire[data_dir]; - list_add_tail(&arq->fifo, &ad->fifo_list[data_dir]); + rq_set_fifo_time(rq, jiffies + ad->fifo_expire[data_dir]); + list_add_tail(&rq->queuelist, &ad->fifo_list[data_dir]); as_update_arq(ad, arq); /* keep state machine up to date */ arq->state = AS_RQ_QUEUED; @@ -1277,10 +1268,10 @@ static void as_merged_requests(request_queue_t *q, struct request *req, * if anext expires before arq, assign its expire time to arq * and move into anext position (anext will be deleted) in fifo */ - if (!list_empty(&arq->fifo) && !list_empty(&anext->fifo)) { - if (time_before(anext->expires, arq->expires)) { - list_move(&arq->fifo, &anext->fifo); - arq->expires = anext->expires; + if (!list_empty(&req->queuelist) && !list_empty(&next->queuelist)) { + if (time_before(rq_fifo_time(next), rq_fifo_time(req))) { + list_move(&req->queuelist, &next->queuelist); + rq_set_fifo_time(req, rq_fifo_time(next)); /* * Don't copy here but swap, because when anext is * removed below, it must contain the unused context @@ -1350,7 +1341,6 @@ static int as_set_request(request_queue_t *q, struct request *rq, arq->request = rq; arq->state = AS_RQ_PRESCHED; arq->io_context = NULL; - INIT_LIST_HEAD(&arq->fifo); rq->elevator_private = arq; return 0; } |