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authorMing Lei <ming.lei@redhat.com>2020-06-30 13:24:56 +0300
committerJens Axboe <axboe@kernel.dk>2020-06-30 16:51:48 +0300
commit65c763694398a2de63803b264dcf906b47f9d4c1 (patch)
treeb5047ad8b5963a9933990a2d5bb4f55dabafa099 /block/blk-mq.c
parent42fdc5e49c2be97db112d410d07044e0e2c7d5bb (diff)
downloadlinux-65c763694398a2de63803b264dcf906b47f9d4c1.tar.xz
blk-mq: pass request queue into get/put budget callback
blk-mq budget is abstract from scsi's device queue depth, and it is always per-request-queue instead of hctx. It can be quite absurd to get a budget from one hctx, then dequeue a request from scheduler queue, and this request may not belong to this hctx, at least for bfq and deadline. So fix the mess and always pass request queue to get/put budget callback. Signed-off-by: Ming Lei <ming.lei@redhat.com> Tested-by: Baolin Wang <baolin.wang7@gmail.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Baolin Wang <baolin.wang7@gmail.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Douglas Anderson <dianders@chromium.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
-rw-r--r--block/blk-mq.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 72d3034fe39d..8cdc868f4249 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1284,7 +1284,7 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list,
rq = list_first_entry(list, struct request, queuelist);
hctx = rq->mq_hctx;
- if (!got_budget && !blk_mq_get_dispatch_budget(hctx)) {
+ if (!got_budget && !blk_mq_get_dispatch_budget(q)) {
blk_mq_put_driver_tag(rq);
no_budget_avail = true;
break;
@@ -1299,7 +1299,7 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list,
* we'll re-run it below.
*/
if (!blk_mq_mark_tag_wait(hctx, rq)) {
- blk_mq_put_dispatch_budget(hctx);
+ blk_mq_put_dispatch_budget(q);
/*
* For non-shared tags, the RESTART check
* will suffice.
@@ -1947,11 +1947,11 @@ static blk_status_t __blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
if (q->elevator && !bypass_insert)
goto insert;
- if (!blk_mq_get_dispatch_budget(hctx))
+ if (!blk_mq_get_dispatch_budget(q))
goto insert;
if (!blk_mq_get_driver_tag(rq)) {
- blk_mq_put_dispatch_budget(hctx);
+ blk_mq_put_dispatch_budget(q);
goto insert;
}