By heming.zhao@suse.com

This patch was updated/changed after boo#1230635

----

diff -Nupr a/drbd/drbd-kernel-compat/tests/have_bdev_open_by_path.c b/drbd/drbd-kernel-compat/tests/have_bdev_open_by_path.c
--- a/drbd/drbd-kernel-compat/tests/have_bdev_open_by_path.c	2024-06-19 15:02:47.050694378 +0800
+++ b/drbd/drbd-kernel-compat/tests/have_bdev_open_by_path.c	2024-06-19 15:11:39.313298178 +0800
@@ -2,7 +2,7 @@
 
 #include <linux/blkdev.h>
 
-struct bdev_handle *foo(const char *path, blk_mode_t mode, void *holder,
-		const struct blk_holder_ops *hops) {
-	return bdev_open_by_path(path, mode, holder, hops);
+void foo(void)
+{
+	return;
 }
diff -Nupr a/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c b/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c
--- a/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c	2024-06-19 11:35:39.957400039 +0800
+++ b/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c	2024-06-19 11:36:43.594396686 +0800
@@ -2,7 +2,17 @@
 
 #include <linux/blkdev.h>
 
+#define DRBD_MAX_BIO_SIZE_SAFE (1U << 12)       /* Works always = 4k */
+
 struct gendisk *foo(int node)
 {
-	return blk_alloc_disk(node);
+        struct queue_limits lim = {                                                                          
+		/*
+		 * Setting the max_hw_sectors to an odd value of 8kibyte here.
+		 * This triggers a max_bio_size message upon first attach or
+		 * connect.
+		 */
+		.max_hw_sectors         = DRBD_MAX_BIO_SIZE_SAFE >> 8,
+	};
+	return blk_alloc_disk(&lim, node);
 }
diff -Nupr a/drbd/drbd_main.c b/drbd/drbd_main.c
--- a/drbd/drbd_main.c	2024-06-19 11:41:59.409367593 +0800
+++ b/drbd/drbd_main.c	2024-06-19 11:41:40.052600574 +0800
@@ -3752,6 +3752,7 @@ static int init_submitter(struct drbd_de
 	return 0;
 }
 
+#define DRBD_MAX_BIO_SIZE_SAFE (1U << 12)       /* Works always = 4k */
 enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsigned int minor,
 				      struct device_conf *device_conf, struct drbd_device **p_device)
 {
@@ -3767,6 +3768,15 @@ enum drbd_ret_code drbd_create_device(st
 	enum drbd_ret_code err = ERR_NOMEM;
 	bool locked = false;
 
+	struct queue_limits lim = {                                                                          
+		/*
+		 * Setting the max_hw_sectors to an odd value of 8kibyte here.
+		 * This triggers a max_bio_size message upon first attach or
+		 * connect.
+		 */
+		.max_hw_sectors         = DRBD_MAX_BIO_SIZE_SAFE >> 8,
+	};
+
 	lockdep_assert_held(&resource->conf_update);
 
 	device = minor_to_device(minor);
@@ -3824,7 +3834,7 @@ enum drbd_ret_code drbd_create_device(st
 
 	init_rwsem(&device->uuid_sem);
 
-	disk = blk_alloc_disk(NUMA_NO_NODE);
+	disk = blk_alloc_disk(&lim, NUMA_NO_NODE);
 	if (!disk)
 		goto out_no_disk;