/* this patch is related with following upstream kernel commit */

commit 07888c665b405b1cd3577ddebfeb74f4717a84c4
Author: Christoph Hellwig <hch@lst.de>
Date:   Mon Jan 24 10:11:05 2022 +0100

    block: pass a block_device and opf to bio_alloc
    
    Pass the block_device and operation that we plan to use this bio for to
    bio_alloc to optimize the assignment.  NULL/0 can be passed, both for the
    passthrough case on a raw request_queue and to temporarily avoid
    refactoring some nasty code.
    
    Also move the gfp_mask argument after the nr_vecs argument for a much
    more logical calling convention matching what most of the kernel does.
    
    Signed-off-by: Christoph Hellwig <hch@lst.de>
    Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
    Link: https://lore.kernel.org/r/20220124091107.642561-18-hch@lst.de
    Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff -Nupr a/drbd/drbd_receiver.c b/drbd/drbd_receiver.c
--- a/drbd/drbd_receiver.c	2022-07-08 06:55:17.451589834 +0800
+++ b/drbd/drbd_receiver.c	2022-07-08 06:59:24.486571488 +0800
@@ -1263,7 +1263,8 @@ static void one_flush_endio(struct bio *
 
 static void submit_one_flush(struct drbd_device *device, struct issue_flush_context *ctx)
 {
-	struct bio *bio = bio_alloc(GFP_NOIO, 0);
+	struct bio *bio = bio_alloc(device->ldev->backing_bdev, 0,
+				    REQ_OP_FLUSH | REQ_PREFLUSH, GFP_NOIO);
 	struct one_flush_context *octx = kmalloc(sizeof(*octx), GFP_NOIO);
 	if (!bio || !octx) {
 		drbd_warn(device, "Could not allocate a bio, CANNOT ISSUE FLUSH\n");
@@ -1283,14 +1284,12 @@ static void submit_one_flush(struct drbd
 
 	octx->device = device;
 	octx->ctx = ctx;
-	bio_set_dev(bio, device->ldev->backing_bdev);
 	bio->bi_private = octx;
 	bio->bi_end_io = one_flush_endio;
 
 	device->flush_jif = jiffies;
 	set_bit(FLUSH_PENDING, &device->flags);
 	atomic_inc(&ctx->pending);
-	bio->bi_opf = REQ_OP_FLUSH | REQ_PREFLUSH;
 	submit_bio(bio);
 }
 
@@ -1832,17 +1831,14 @@ next_bio:
 		goto fail;
 	}
 
-	bio = bio_alloc(GFP_NOIO, nr_pages);
+	bio = bio_alloc(device->ldev->backing_bdev, nr_pages, peer_req->opf,
+			GFP_NOIO);
 	if (!bio) {
 		drbd_err(device, "submit_ee: Allocation of a bio failed (nr_pages=%u)\n", nr_pages);
 		goto fail;
 	}
 	/* > peer_req->i.sector, unless this is the first bio */
 	bio->bi_iter.bi_sector = sector;
-	bio_set_dev(bio, device->ldev->backing_bdev);
-	/* we special case some flags in the multi-bio case, see below
-	 * (REQ_PREFLUSH, or BIO_RW_BARRIER in older kernels) */
-	bio->bi_opf = peer_req->opf;
 	bio->bi_private = peer_req;
 	bio->bi_end_io = drbd_peer_request_endio;