/* {"version":"v5.15-rc1~161", "commit": ""471aa704db4904f7af5a50019ca3b5b018c0cf62, "comment": "block: pass a gendisk to blk_queue_update_readahead"} */

diff -Naur drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd-kernel-compat/gen_patch_names.c drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/gen_patch_names.c
--- drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd-kernel-compat/gen_patch_names.c	2021-11-19 12:56:56.962529304 +0800
+++ drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/gen_patch_names.c	2021-11-19 12:58:45.370112678 +0800
@@ -391,8 +391,10 @@
 	patch(1, "wb_congested_enum", true, false,
 	      COMPAT_HAVE_WB_CONGESTED_ENUM, "present");
 
+#ifndef COMPAT_HAVE_DISK_UPDATE_READAHEAD
 	patch(1, "blk_queue_update_readahead", true, false,
 	      COMPAT_HAVE_BLK_QUEUE_UPDATE_READAHEAD, "present");
+#endif
 
 	patch(1, "backing_dev_info", true, false,
 	      COMPAT_HAVE_POINTER_BACKING_DEV_INFO, "is_pointer");
diff -Naur drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd-kernel-compat/tests/have_disk_update_readahead.c drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/tests/have_disk_update_readahead.c
--- drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd-kernel-compat/tests/have_disk_update_readahead.c	1970-01-01 08:00:00.000000000 +0800
+++ drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/tests/have_disk_update_readahead.c	2021-11-19 12:59:10.194017276 +0800
@@ -0,0 +1,9 @@
+/* { "version": "v5.16", "commit": "471aa704db4904f7af5a50019ca3b5b018c0cf62", "comment": "block: pass a gendisk to blk_queue_update_readahead", "author": "Christoph Hellwig <hch@lst.de>", "date": "Mon Aug 9 16:17:41 2021 +0200" } */
+
+#include <linux/genhd.h>
+#include <linux/blkdev.h>
+
+void foo(struct gendisk *d)
+{
+       disk_update_readahead(d);
+}
diff -Naur drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd_nl.c drbd-9.0.30~1+git.8e9c0812/drbd/drbd_nl.c
--- drbd-9.0.30~1+git.8e9c0812.orig/drbd/drbd_nl.c	2021-11-19 12:56:56.966529288 +0800
+++ drbd-9.0.30~1+git.8e9c0812/drbd/drbd_nl.c	2021-11-19 13:00:37.777680684 +0800
@@ -2124,7 +2124,11 @@
 
 	if (b) {
 		blk_stack_limits(&q->limits, &b->limits, 0);
+#ifdef COMPAT_HAVE_DISK_UPDATE_READAHEAD
+		disk_update_readahead(device->vdisk);
+#else
 		blk_queue_update_readahead(q);
+#endif
 	}
 	fixup_discard_if_not_supported(q);
 	fixup_write_zeroes(device, q);