configure: refactor bdev_{close|open}() API

Signed-off-by: Michal Mielewczyk <[email protected]>

configure.d/1_bdev_open_by_path.conf

@@ -14,15 +14,18 @@ check() {
 	if compile_module $cur_name "blkdev_get_by_path(NULL, 0, NULL);" "linux/blkdev.h"
 	then
 		echo $cur_name 1 >> $config_file_path
-	elif compile_module $cur_name "blkdev_get_by_path(NULL, 0, NULL, NULL);" "linux/blkdev.h"
+	elif compile_module $cur_name "blkdev_get_by_path(NULL, 0, NULL, NULL);blkdev_put(NULL, FMODE_READ);" "linux/blkdev.h"
 	then
 		echo $cur_name 2 >> $config_file_path
-	elif compile_module $cur_name "bdev_open_by_path(NULL, 0, NULL, NULL);" "linux/blkdev.h"
+	elif compile_module $cur_name "blkdev_get_by_path(NULL, 0, NULL, NULL);blkdev_put(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"
+	elif compile_module $cur_name "bdev_open_by_path(NULL, 0, NULL, NULL);" "linux/blkdev.h"
 	then
 		echo $cur_name 4 >> $config_file_path
+	elif compile_module $cur_name "bdev_file_open_by_path(NULL, 0, NULL, NULL);" "linux/blkdev.h"
+	then
+		echo $cur_name 5 >> $config_file_path
 	else
 		echo $cur_name X >> $config_file_path
 	fi
@@ -31,29 +34,50 @@ check() {
 apply() {
 	case "$1" in
 	"1")
+		# Related kernel commit 0718afd47f70cf46877c39c25d06b786e1a3f36c
 		add_typedef "struct block_device *cas_bdev_handle_t;"
 		add_define "cas_bdev_open_by_path(path, mode, holder) \\
 			blkdev_get_by_path(path, mode, holder)"
 		add_define "cas_bdev_get_from_handle(handle) \\
-			((struct block_device *)handle)" ;;
+			((struct block_device *)handle)"
+		add_define "cas_bdev_release(handle, mode, holder) \\
+			blkdev_put((struct block_device *)handle, mode)" ;;
 	"2")
+		# Before kernel commit 2736e8eeb0ccdc71d1f4256c9c9a28f58cc43307
 		add_typedef "struct block_device *cas_bdev_handle_t;"
 		add_define "cas_bdev_open_by_path(path, mode, holder) \\
 			blkdev_get_by_path(path, mode, holder, NULL)"
 		add_define "cas_bdev_get_from_handle(handle) \\
-			((struct block_device *)handle)" ;;
+			((struct block_device *)handle)"
+		add_define "cas_bdev_release(handle, mode, holder) \\
+			blkdev_put((struct block_device *)handle, mode)" ;;
 	"3")
+		# From kernel commit 2736e8eeb0ccdc71d1f4256c9c9a28f58cc43307
+		add_typedef "struct block_device *cas_bdev_handle_t;"
+		add_define "cas_bdev_open_by_path(path, mode, holder) \\
+			blkdev_get_by_path(path, mode, holder, NULL)"
+		add_define "cas_bdev_get_from_handle(handle) \\
+			((struct block_device *)handle)"
+		add_define "cas_bdev_release(handle, mode, holder) \\
+			blkdev_put((struct block_device *)handle, holder)" ;;
+	"4")
+		# From kernel commit e719b4d156749f02eafed31a3c515f2aa9dcc72a
 		add_typedef "struct bdev_handle *cas_bdev_handle_t;"
 		add_define "cas_bdev_open_by_path(path, mode, holder) \\
 			bdev_open_by_path(path, mode, holder, NULL)"
 		add_define "cas_bdev_get_from_handle(handle) \\
-			(handle->bdev)" ;;
-	"4")
+			(handle->bdev)"
+		add_define "cas_bdev_release(handle, mode, holder) \\
+			bdev_release(handle)" ;;
+	"5")
+		# From kernel commit e97d06a46526d9392cbdbd7eda193091e1af2723
 		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)" ;;
+			file_bdev(handle)"
+		add_define "cas_bdev_release(handle, mode, holder) \\
+			__fput_sync(handle)" ;;
 	*)
 		exit 1
 	esac