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authorMing Lei <ming.lei@redhat.com>2020-07-06 22:41:11 +0800
committerJens Axboe <axboe@kernel.dk>2020-07-08 16:06:42 -0600
commit568f2700657794b8258e72983ba508793a658942 (patch)
tree80372f8bdcf5994afeed2a73c503da510c624468 /block/blk-flush.c
parent7bf137298cb73afdb8c5536e474f7ba71ab1c235 (diff)
blk-mq: centralise related handling into blk_mq_get_driver_tag
Move .nr_active update and request assignment into blk_mq_get_driver_tag(), all are good to do during getting driver tag. Meantime blk-flush related code is simplified and flush request needn't to update the request table manually any more. Signed-off-by: Ming Lei <ming.lei@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-flush.c')
-rw-r--r--block/blk-flush.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 15ae0155ec07..71c7f520e040 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -219,7 +219,6 @@ static void flush_end_io(struct request *flush_rq, blk_status_t error)
struct request *rq, *n;
unsigned long flags = 0;
struct blk_flush_queue *fq = blk_get_flush_queue(q, flush_rq->mq_ctx);
- struct blk_mq_hw_ctx *hctx;
blk_account_io_flush(flush_rq);
@@ -235,13 +234,11 @@ static void flush_end_io(struct request *flush_rq, blk_status_t error)
if (fq->rq_status != BLK_STS_OK)
error = fq->rq_status;
- hctx = flush_rq->mq_hctx;
if (!q->elevator) {
- blk_mq_tag_set_rq(hctx, flush_rq->tag, fq->orig_rq);
- flush_rq->tag = -1;
+ flush_rq->tag = BLK_MQ_NO_TAG;
} else {
blk_mq_put_driver_tag(flush_rq);
- flush_rq->internal_tag = -1;
+ flush_rq->internal_tag = BLK_MQ_NO_TAG;
}
running = &fq->flush_queue[fq->flush_running_idx];
@@ -316,13 +313,10 @@ static void blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq,
flush_rq->mq_ctx = first_rq->mq_ctx;
flush_rq->mq_hctx = first_rq->mq_hctx;
- if (!q->elevator) {
- fq->orig_rq = first_rq;
+ if (!q->elevator)
flush_rq->tag = first_rq->tag;
- blk_mq_tag_set_rq(flush_rq->mq_hctx, first_rq->tag, flush_rq);
- } else {
+ else
flush_rq->internal_tag = first_rq->internal_tag;
- }
flush_rq->cmd_flags = REQ_OP_FLUSH | REQ_PREFLUSH;
flush_rq->cmd_flags |= (flags & REQ_DRV) | (flags & REQ_FAILFAST_MASK);