block: don't bother with bounce limits for make_request drivers

We only call blk_queue_bounce for request-based drivers, so stop messing
with it for make_request based drivers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

9 files changed, 10 insertions, 11 deletions

diff --git a/block/blk-core.c b/block/blk-core.c
index af393d5..8699c42 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -989,6 +989,11 @@ int blk_init_allocated_queue(struct request_queue *q)
 	 */
 	blk_queue_make_request(q, blk_queue_bio);
 
+	/*
+	 * by default assume old behaviour and bounce for any highmem page
+	 */
+	blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
+
 	q->sg_reserved_size = INT_MAX;
 
 	/* Protect q->elevator from elevator_change */
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 05dfa3f..41e3aeb 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2350,6 +2350,11 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
 	blk_queue_make_request(q, blk_mq_make_request);
 
 	/*
+	 * by default assume old behaviour and bounce for any highmem page
+	 */
+	blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
+
+	/*
 	 * Do this after blk_queue_make_request() overrides it...
 	 */
 	q->nr_requests = set->queue_depth;
diff --git a/block/blk-settings.c b/block/blk-settings.c
index 4fa81ed3..be1f115 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -172,11 +172,6 @@ void blk_queue_make_request(struct request_queue *q, make_request_fn *mfn)
 	q->nr_batching = BLK_BATCH_REQ;
 
 	blk_set_default_limits(&q->limits);
-
-	/*
-	 * by default assume old behaviour and bounce for any highmem page
-	 */
-	blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
 }
 EXPORT_SYMBOL(blk_queue_make_request);
 
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 57b574f..6112e99 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -418,7 +418,6 @@ static struct brd_device *brd_alloc(int i)
 
 	blk_queue_make_request(brd->brd_queue, brd_make_request);
 	blk_queue_max_hw_sectors(brd->brd_queue, 1024);
-	blk_queue_bounce_limit(brd->brd_queue, BLK_BOUNCE_ANY);
 
 	/* This is so fdisk will align partitions on 4k, because of
 	 * direct_access API needing 4k alignment, returning a PFN
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 9068003..5fb99e0 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2850,7 +2850,6 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
 	/* Setting the max_hw_sectors to an odd value of 8kibyte here
 	   This triggers a max_bio_size message upon first attach or connect */
 	blk_queue_max_hw_sectors(q, DRBD_MAX_BIO_SIZE_SAFE >> 8);
-	blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);
 	q->queue_lock = &resource->req_lock;
 
 	device->md_io.page = alloc_page(GFP_KERNEL);
diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c
index 4e8bdfa..7f4aceb 100644
--- a/drivers/block/rsxx/dev.c
+++ b/drivers/block/rsxx/dev.c
@@ -284,7 +284,6 @@ int rsxx_setup_dev(struct rsxx_cardinfo *card)
 	}
 
 	blk_queue_make_request(card->queue, rsxx_make_request);
-	blk_queue_bounce_limit(card->queue, BLK_BOUNCE_ANY);
 	blk_queue_max_hw_sectors(card->queue, blkdev_max_hw_sectors);
 	blk_queue_physical_block_size(card->queue, RSXX_HW_BLK_SIZE);
 
diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c
index 79eb9fb..f12d23c 100644
--- a/drivers/nvdimm/blk.c
+++ b/drivers/nvdimm/blk.c
@@ -273,7 +273,6 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk)
 
 	blk_queue_make_request(q, nd_blk_make_request);
 	blk_queue_max_hw_sectors(q, UINT_MAX);
-	blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);
 	blk_queue_logical_block_size(q, nsblk_sector_size(nsblk));
 	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
 	q->queuedata = nsblk;
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 31b2d14..b6ba061 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1297,7 +1297,6 @@ static int btt_blk_init(struct btt *btt)
 	blk_queue_make_request(btt->btt_queue, btt_make_request);
 	blk_queue_logical_block_size(btt->btt_queue, btt->sector_size);
 	blk_queue_max_hw_sectors(btt->btt_queue, UINT_MAX);
-	blk_queue_bounce_limit(btt->btt_queue, BLK_BOUNCE_ANY);
 	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, btt->btt_queue);
 	btt->btt_queue->queuedata = btt;
 
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 7bd383a..6b577af 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -343,7 +343,6 @@ static int pmem_attach_disk(struct device *dev,
 	blk_queue_make_request(q, pmem_make_request);
 	blk_queue_physical_block_size(q, PAGE_SIZE);
 	blk_queue_max_hw_sectors(q, UINT_MAX);
-	blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);
 	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
 	queue_flag_set_unlocked(QUEUE_FLAG_DAX, q);
 	q->queuedata = pmem;