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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-04-05 08:39:18 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-05 09:40:15 -0600 |
| commit | f2fbc9dd78970accd7649e8b87c7f00a0da0cdbc (patch) | |
| tree | 23bb17c186dc8c20942e1dfc9f23229ffae599f6 /block | |
| parent | 142bbdfccc8b3e9f7342f2ce8422e76a3b45beae (diff) | |
| download | linux-0-day-f2fbc9dd78970accd7649e8b87c7f00a0da0cdbc.tar.gz linux-0-day-f2fbc9dd78970accd7649e8b87c7f00a0da0cdbc.tar.xz | |
blk-mq: Remove blk_mq_queue_data.list
The block layer core sets blk_mq_queue_data.list but no block
drivers read that member. Hence remove it and also the code that
is used to set this member.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 061fc2cc88d3d..f7cd3208bcdf7 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -984,17 +984,9 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list) { struct request_queue *q = hctx->queue; struct request *rq; - LIST_HEAD(driver_list); - struct list_head *dptr; int errors, queued, ret = BLK_MQ_RQ_QUEUE_OK; /* - * Start off with dptr being NULL, so we start the first request - * immediately, even if we have more pending. - */ - dptr = NULL; - - /* * Now process all the entries, sending them to the driver. */ errors = queued = 0; @@ -1026,7 +1018,6 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list) list_del_init(&rq->queuelist); bd.rq = rq; - bd.list = dptr; /* * Flag last if we have no more requests, or if we have more @@ -1062,13 +1053,6 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list) if (ret == BLK_MQ_RQ_QUEUE_BUSY) break; - - /* - * We've done the first request. If we have more than 1 - * left in the list, set dptr to defer issue. - */ - if (!dptr && list->next != list->prev) - dptr = &driver_list; } hctx->dispatched[queued_to_index(queued)]++; @@ -1451,7 +1435,6 @@ static void __blk_mq_try_issue_directly(struct request *rq, blk_qc_t *cookie, struct request_queue *q = rq->q; struct blk_mq_queue_data bd = { .rq = rq, - .list = NULL, .last = 1 }; struct blk_mq_hw_ctx *hctx; |