[PATCH V6 01/12] block: add helper of blk_queue_poll

Ming Lei
2021-04-22T12:21:18Z

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 ca7f833e25a8..d44a8b934608 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -868,7 +868,7 @@ 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 7d2ea6357c7d..47e650bb836b 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3887,8 +3887,7 @@ 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 e03bedf180ab..fed4981b1f7a 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -422,7 +422,7 @@ 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 f2e77ba97550..668223168412 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -675,6 +675,7 @@ 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