rnbd: remove rnbd_dev_submit_io

The function only has one caller, so let's open code it in process_rdma.
Another bonus is we can avoid push/pop stack, since we need to pass 8
arguments to rnbd_dev_submit_io.

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Acked-by: Danil Kipnis <danil.kipnis@cloud.ionos.com>
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 3 insertions, 33 deletions

diff --git a/drivers/block/rnbd/rnbd-srv-dev.c b/drivers/block/rnbd/rnbd-srv-dev.c
index 5eddfd29ab64..49c62b506c9b 100644
--- a/drivers/block/rnbd/rnbd-srv-dev.c
+++ b/drivers/block/rnbd/rnbd-srv-dev.c
@@ -45,7 +45,7 @@ void rnbd_dev_close(struct rnbd_dev *dev)
 	kfree(dev);
 }
 
-static void rnbd_dev_bi_end_io(struct bio *bio)
+void rnbd_dev_bi_end_io(struct bio *bio)
 {
 	struct rnbd_dev_blk_io *io = bio->bi_private;
 
@@ -63,8 +63,8 @@ static void rnbd_dev_bi_end_io(struct bio *bio)
  *	Map the kernel address into a bio suitable for io to a block
  *	device. Returns an error pointer in case of error.
  */
-static struct bio *rnbd_bio_map_kern(void *data, struct bio_set *bs,
-				     unsigned int len, gfp_t gfp_mask)
+struct bio *rnbd_bio_map_kern(void *data, struct bio_set *bs,
+			      unsigned int len, gfp_t gfp_mask)
 {
 	unsigned long kaddr = (unsigned long)data;
 	unsigned long end = (kaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
@@ -102,33 +102,3 @@ static struct bio *rnbd_bio_map_kern(void *data, struct bio_set *bs,
 	bio->bi_end_io = bio_put;
 	return bio;
 }
-
-int rnbd_dev_submit_io(struct rnbd_dev *dev, sector_t sector, void *data,
-		       size_t len, u32 bi_size, enum rnbd_io_flags flags,
-		       short prio, void *priv)
-{
-	struct rnbd_dev_blk_io *io;
-	struct bio *bio;
-
-	/* Generate bio with pages pointing to the rdma buffer */
-	bio = rnbd_bio_map_kern(data, dev->ibd_bio_set, len, GFP_KERNEL);
-	if (IS_ERR(bio))
-		return PTR_ERR(bio);
-
-	io = container_of(bio, struct rnbd_dev_blk_io, bio);
-
-	io->dev	= dev;
-	io->priv = priv;
-
-	bio->bi_end_io = rnbd_dev_bi_end_io;
-	bio->bi_private	= io;
-	bio->bi_opf = rnbd_to_bio_flags(flags);
-	bio->bi_iter.bi_sector = sector;
-	bio->bi_iter.bi_size = bi_size;
-	bio_set_prio(bio, prio);
-	bio_set_dev(bio, dev->bdev);
-
-	submit_bio(bio);
-
-	return 0;
-}