[PATCH V6 05/12] block: extract one helper function polling hw queue
From: Ming Lei <hidden>
Date: 2021-04-22 12:22:20
Also in:
dm-devel
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
From: Jeffle Xu <jefflexu@linux.alibaba.com> Extract the logic of polling a hw queue and related statistics handling out as the helper function. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> Signed-off-by: Ming Lei <redacted> --- block/blk-poll.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/block/blk-poll.c b/block/blk-poll.c
index daa307f84792..0a38c25bcee5 100644
--- a/block/blk-poll.c
+++ b/block/blk-poll.c@@ -129,6 +129,19 @@ static bool blk_mq_poll_hybrid(struct request_queue *q, return blk_mq_poll_hybrid_sleep(q, rq); } +static inline int blk_mq_poll_hctx(struct request_queue *q, + struct blk_mq_hw_ctx *hctx) +{ + int ret; + + hctx->poll_invoked++; + ret = q->mq_ops->poll(hctx); + if (ret > 0) + hctx->poll_success++; + + return ret; +} + /** * blk_poll - poll for IO completions * @q: the queue
@@ -171,11 +184,8 @@ int blk_poll(struct request_queue *q, blk_qc_t cookie, bool spin) do { int ret; - hctx->poll_invoked++; - - ret = q->mq_ops->poll(hctx); + ret = blk_mq_poll_hctx(q, hctx); if (ret > 0) { - hctx->poll_success++; __set_current_state(TASK_RUNNING); return ret; }
--
2.29.2