Add support for kernel v6.9

Signed-off-by: Robert Baldyga <robert.baldyga@huawei.com>

configure.d/1_bdev_open_by_path.conf

@@ -20,6 +20,9 @@ check() {
 	elif compile_module $cur_name "bdev_open_by_path(NULL, 0, NULL, NULL);" "linux/blkdev.h"
 	then
 		echo $cur_name 3 >> $config_file_path
+	elif compile_module $cur_name "bdev_file_open_by_path(NULL, 0, NULL, NULL);" "linux/blkdev.h"
+	then
+		echo $cur_name 4 >> $config_file_path
 	else
 		echo $cur_name X >> $config_file_path
 	fi
@@ -45,6 +48,12 @@ apply() {
 			bdev_open_by_path(path, mode, holder, NULL)"
 		add_define "cas_bdev_get_from_handle(handle) \\
 			(handle->bdev)" ;;
+	"4")
+		add_typedef "struct file *cas_bdev_handle_t;"
+		add_define "cas_bdev_open_by_path(path, mode, holder) \\
+			bdev_file_open_by_path(path, mode, holder, NULL)"
+		add_define "cas_bdev_get_from_handle(handle) \\
+			file_bdev(handle)" ;;
 	*)
 		exit 1
 	esac

configure.d/1_bdev_release.conf

@@ -20,6 +20,9 @@ check() {
 	elif compile_module $cur_name "bdev_release(NULL);" "linux/blkdev.h"
 	then
 		echo $cur_name 3 >> $config_file_path
+	elif compile_module $cur_name "bdev_file_open_by_path(NULL, 0, NULL, NULL);" "linux/blkdev.h"
+	then
+		echo $cur_name 4 >> $config_file_path
 	else
 		echo $cur_name X >> $config_file_path
 	fi
@@ -36,6 +39,9 @@ apply() {
 	"3")
 		add_define "cas_bdev_release(handle, mode, holder) \\
 			bdev_release(handle)" ;;
+	"4")
+		add_define "cas_bdev_release(handle, mode, holder) \\
+			fput(handle)" ;;
 	*)
 		exit 1
 	esac

configure.d/2_alloc_disk.conf

@@ -1,6 +1,7 @@
 #!/bin/bash
 #
 # Copyright(c) 2012-2022 Intel Corporation
+# Copyright(c) 2024 Huawei Technologies
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
@@ -10,11 +11,17 @@
 check() {
 	cur_name=$(basename $2)
 	config_file_path=$1
-	if compile_module $cur_name "blk_mq_alloc_disk(NULL, NULL);" "linux/blk-mq.h"
+	if compile_module $cur_name "blk_mq_alloc_disk(NULL, NULL, NULL);" "linux/blk-mq.h"
 	then
 		echo $cur_name 1 >> $config_file_path
-	else
+	elif compile_module $cur_name "blk_mq_alloc_disk(NULL, NULL);" "linux/blk-mq.h"
+	then
 		echo $cur_name 2 >> $config_file_path
+	elif compile_module $cur_name "alloc_disk(0);" "linux/genhd.h"
+	then
+		echo $cur_name 3 >> $config_file_path
+	else
+		echo $cur_name X >> $config_file_path
 	fi
 }
 
@@ -25,7 +32,7 @@ apply() {
         static inline int cas_alloc_mq_disk(struct gendisk **gd, struct request_queue **queue,
 					    struct blk_mq_tag_set *tag_set)
         {
-		*gd = blk_mq_alloc_disk(tag_set, NULL);
+		*gd = blk_mq_alloc_disk(tag_set, NULL, NULL);
 		if (!(*gd))
 			return -ENOMEM;
 
@@ -41,6 +48,26 @@ apply() {
 	;;
 
     "2")
+        add_function "
+        static inline int cas_alloc_mq_disk(struct gendisk **gd, struct request_queue **queue,
+					    struct blk_mq_tag_set *tag_set)
+        {
+		*gd = blk_mq_alloc_disk(tag_set, NULL);
+		if (!(*gd))
+			return -ENOMEM;
+
+		*queue = (*gd)->queue;
+
+		return 0;
+        }"
+	add_function "
+	static inline void cas_cleanup_mq_disk(struct gendisk *gd)
+	{
+		cas_cleanup_disk(gd);
+	}"
+	;;
+
+    "3")
 
 	add_function "
         static inline int cas_alloc_mq_disk(struct gendisk **gd, struct request_queue **queue,