[PATCH V4 01/12] block: add helper of blk_queue_poll

[Ming Lei <ming.lei@redhat.com>]

There has been 3 users, and will be more, so add one such helper.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 block/blk-core.c         | 2 +-
 block/blk-mq.c           | 3 +--
 block/blk-sysfs.c        | 2 +-
 drivers/nvme/host/core.c | 2 +-
 include/linux/blkdev.h   | 1 +
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index fc60ff208497..a31371d55b9d 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -836,7 +836,7 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio)
 		}
 	}
 
-	if (!test_bit(QUEUE_FLAG_POLL, &q->queue_flags))
+	if (!blk_queue_poll(q))
 		bio->bi_opf &= ~REQ_HIPRI;
 
 	switch (bio_op(bio)) {
diff --git a/block/blk-mq.c b/block/blk-mq.c
index d4d7c1caa439..63c81df3b8b5 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3869,8 +3869,7 @@ int blk_poll(struct request_queue *q, blk_qc_t cookie, bool spin)
 	struct blk_mq_hw_ctx *hctx;
 	long state;
 
-	if (!blk_qc_t_valid(cookie) ||
-	    !test_bit(QUEUE_FLAG_POLL, &q->queue_flags))
+	if (!blk_qc_t_valid(cookie) || !blk_queue_poll(q))
 		return 0;
 
 	if (current->plug)
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 0f4f0c8a7825..db3268d41274 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -417,7 +417,7 @@ static ssize_t queue_poll_delay_store(struct request_queue *q, const char *page,
 
 static ssize_t queue_poll_show(struct request_queue *q, char *page)
 {
-	return queue_var_show(test_bit(QUEUE_FLAG_POLL, &q->queue_flags), page);
+	return queue_var_show(blk_queue_poll(q), page);
 }
 
 static ssize_t queue_poll_store(struct request_queue *q, const char *page,
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 0896e21642be..34b8c78f88e0 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -956,7 +956,7 @@ static void nvme_execute_rq_polled(struct request_queue *q,
 {
 	DECLARE_COMPLETION_ONSTACK(wait);
 
-	WARN_ON_ONCE(!test_bit(QUEUE_FLAG_POLL, &q->queue_flags));
+	WARN_ON_ONCE(!blk_queue_poll(q));
 
 	rq->cmd_flags |= REQ_HIPRI;
 	rq->end_io_data = &wait;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index bc6bc8383b43..89a01850cf12 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -665,6 +665,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
 #define blk_queue_fua(q)	test_bit(QUEUE_FLAG_FUA, &(q)->queue_flags)
 #define blk_queue_registered(q)	test_bit(QUEUE_FLAG_REGISTERED, &(q)->queue_flags)
 #define blk_queue_nowait(q)	test_bit(QUEUE_FLAG_NOWAIT, &(q)->queue_flags)
+#define blk_queue_poll(q)	test_bit(QUEUE_FLAG_POLL, &(q)->queue_flags)
 
 extern void blk_set_pm_only(struct request_queue *q);
 extern void blk_clear_pm_only(struct request_queue *q);
-- 
2.29.2