/* {"version":"v5.15-rc1~161", "commit": "c66fd019713e9cf7d6f1243c378cd177d01fe18a", "comment": "block: make the block holder code optional"} */

diff -Naur drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd-kernel-compat/tests/have_bd_claim_by_disk.c drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/tests/have_bd_claim_by_disk.c
--- drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd-kernel-compat/tests/have_bd_claim_by_disk.c	2021-11-18 11:27:38.503118180 +0800
+++ drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/tests/have_bd_claim_by_disk.c	2021-11-18 11:28:30.370889421 +0800
@@ -1,6 +1,6 @@
 #include <linux/fs.h>
 
-#ifdef CONFIG_SYSFS
+#if defined(CONFIG_SYSFS) || defined(CONFIG_BLOCK_HOLDER_DEPRECATED)
 void dummy(struct block_device *bdev, void *holder, struct gendisk *disk)
 {
 	bd_claim_by_disk(bdev, holder, disk);
diff -Naur drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd-kernel-compat/tests/have_bd_unlink_disk_holder.c drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/tests/have_bd_unlink_disk_holder.c
--- drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd-kernel-compat/tests/have_bd_unlink_disk_holder.c	2021-11-18 11:27:38.503118180 +0800
+++ drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/tests/have_bd_unlink_disk_holder.c	2021-11-18 13:15:26.943553840 +0800
@@ -2,12 +2,12 @@
 #include <linux/fs.h>
 #include <linux/blkdev.h>
 
-#ifdef CONFIG_SYSFS
+#if defined(CONFIG_SYSFS) || defined(CONFIG_BLOCK_HOLDER_DEPRECATED)
 void dummy(struct block_device *bdev, struct gendisk *disk)
 {
 	/* also check that we are not between 49731ba and e09b457,
 	 * where there was a singular bd_holder_disk for a short time */
-	if (!list_empty(&bdev->bd_holder_disks))
+	/* if (!list_empty(&bdev->bd_holder_disks)) */
 		bd_unlink_disk_holder(bdev, disk);
 }
 #endif