File convert_to_blk_alloc_disk.patch of Package drbd.38638

b647ad024841d02d67e78716f51f355d8d3e9656
	Conver blk_alloc_queue to blk_alloc_disk

diff -Naur drbd-9.0.30~1+git.10bee2d5.orig/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c drbd-9.0.30~1+git.10bee2d5/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c
--- drbd-9.0.30~1+git.10bee2d5.orig/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c	1970-01-01 08:00:00.000000000 +0800
+++ drbd-9.0.30~1+git.10bee2d5/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c	2021-07-26 13:56:29.805439136 +0800
@@ -0,0 +1,8 @@
+/* {"version":"v5.14-rc1", "commit": "f525464a8000f092c20b00eead3eaa9d849c599e", "comment": "block: add blk_alloc_disk and blk_cleanup_disk APIs, "author": "Christoph Hellwig <hch@lst.de>", "date": "Fri May 21 07:50:55 2021 +0200" } */
+/*{"version":"v5.14-rc1", "commit": "b647ad024841d02d67e78716f51f355d8d3e9656", "comment": "drbd: convert to blk_alloc_disk/blk_cleanup_disk", "author": "Christoph Hellwig <hch@lst.de>", "date": "Fri May 21 07:50:57 2021 +0200" }*/
+#include <linux/genhd.h>
+
+void dummy(void)
+{
+	blk_alloc_disk(0);
+}
diff -Naur drbd-9.0.30~1+git.10bee2d5.orig/drbd/drbd_main.c drbd-9.0.30~1+git.10bee2d5/drbd/drbd_main.c
--- drbd-9.0.30~1+git.10bee2d5.orig/drbd/drbd_main.c	2021-07-26 13:56:15.381311173 +0800
+++ drbd-9.0.30~1+git.10bee2d5/drbd/drbd_main.c	2021-07-26 13:58:19.070408470 +0800
@@ -2934,8 +2934,12 @@
 		device->bitmap = NULL;
 	}
 
+#ifdef COMPAT_HAVE_BLK_ALLOC_DISK
+	blk_cleanup_disk(device->vdisk);
+#else
 	put_disk(device->vdisk);
 	blk_cleanup_queue(device->rq_queue);
+#endif
 
 	kfree(device);
 
@@ -3654,7 +3658,9 @@
 	struct drbd_device *device;
 	struct drbd_peer_device *peer_device, *tmp_peer_device;
 	struct gendisk *disk;
+#ifndef COMPAT_HAVE_BLK_ALLOC_DISK
 	struct request_queue *q;
+#endif
 	LIST_HEAD(peer_devices);
 	LIST_HEAD(tmp);
 	int id;
@@ -3719,25 +3725,39 @@
 
 	init_rwsem(&device->uuid_sem);
 
+#ifdef COMPAT_HAVE_BLK_ALLOC_DISK
+	disk = blk_alloc_disk(NUMA_NO_NODE);
+#else
 	q = blk_alloc_queue(NUMA_NO_NODE);
 	if (!q)
 		goto out_no_q;
 	device->rq_queue = q;
 
 	disk = alloc_disk(1);
+#endif
 	if (!disk)
 		goto out_no_disk;
 	device->vdisk = disk;
-
+#ifdef COMPAT_HAVE_BLK_ALLOC_DISK
+	device->rq_queue = disk->queue;
+	disk->minors = 1;
+#else
 	disk->queue = q;
+#endif
+
 	disk->major = DRBD_MAJOR;
 	disk->first_minor = minor;
 	disk->fops = &drbd_ops;
 	sprintf(disk->disk_name, "drbd%d", minor);
 	disk->private_data = device;
 
+#ifdef COMPAT_HAVE_BLK_ALLOC_DISK
+	blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue);
+	blk_queue_write_cache(disk->queue, true, true);
+#else
 	blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q);
 	blk_queue_write_cache(q, true, true);
+#endif
 
 	device->md_io.page = alloc_page(GFP_KERNEL);
 	if (!device->md_io.page)
@@ -3866,10 +3886,15 @@
 out_no_bitmap:
 	__free_page(device->md_io.page);
 out_no_io_page:
+#ifdef COMPAT_HAVE_BLK_ALLOC_DISK
+	blk_cleanup_disk(disk);
+out_no_disk:
+#else
 	put_disk(disk);
 out_no_disk:
 	blk_cleanup_queue(q);
 out_no_q:
+#endif
 	kref_put(&resource->kref, drbd_destroy_resource);
 	kref_debug_put(&resource->kref_debug, 4);
 		/* kref debugging wants an extra put, see has_refs() */