linux-kernel - [PATCH 4/5] block: use bdev_get

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Date:   Thu, 14 Oct 2021 15:03:29 +0100
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Christoph Hellwig <hch@...radead.org>, asml.silence@...il.com
Subject: [PATCH 4/5] block: use bdev_get_queue() in blk-core.c

Convert bdev->bd_disk->queue to bdev_get_queue(), it's uses a cached
queue pointer and so is fater.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 block/blk-core.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 1ad2528680ea..f928990a1341 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -472,7 +472,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags)
 
 static inline int bio_queue_enter(struct bio *bio)
 {
-	struct request_queue *q = bio->bi_bdev->bd_disk->queue;
+	struct request_queue *q = bdev_get_queue(bio->bi_bdev);
 	bool nowait = bio->bi_opf & REQ_NOWAIT;
 	int ret;
 
@@ -782,7 +782,7 @@ static inline blk_status_t blk_check_zone_append(struct request_queue *q,
 static noinline_for_stack bool submit_bio_checks(struct bio *bio)
 {
 	struct block_device *bdev = bio->bi_bdev;
-	struct request_queue *q = bdev->bd_disk->queue;
+	struct request_queue *q = bdev_get_queue(bdev);
 	blk_status_t status = BLK_STS_IOERR;
 	struct blk_plug *plug;
 
@@ -940,7 +940,7 @@ static void __submit_bio_noacct(struct bio *bio)
 	current->bio_list = bio_list_on_stack;
 
 	do {
-		struct request_queue *q = bio->bi_bdev->bd_disk->queue;
+		struct request_queue *q = bdev_get_queue(bio->bi_bdev);
 		struct bio_list lower, same;
 
 		if (unlikely(bio_queue_enter(bio) != 0))
@@ -961,7 +961,7 @@ static void __submit_bio_noacct(struct bio *bio)
 		bio_list_init(&lower);
 		bio_list_init(&same);
 		while ((bio = bio_list_pop(&bio_list_on_stack[0])) != NULL)
-			if (q == bio->bi_bdev->bd_disk->queue)
+			if (q == bdev_get_queue(bio->bi_bdev))
 				bio_list_add(&same, bio);
 			else
 				bio_list_add(&lower, bio);
@@ -1056,7 +1056,7 @@ void submit_bio(struct bio *bio)
 
 		if (unlikely(bio_op(bio) == REQ_OP_WRITE_SAME))
 			count = queue_logical_block_size(
-					bio->bi_bdev->bd_disk->queue) >> 9;
+					bdev_get_queue(bio->bi_bdev)) >> 9;
 		else
 			count = bio_sectors(bio);
 
-- 
2.33.0