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-rw-r--r--include/linux/root_dev.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/root_dev.h b/include/linux/root_dev.h
new file mode 100644
index 000000000..847c9a061
--- /dev/null
+++ b/include/linux/root_dev.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ROOT_DEV_H_
+#define _ROOT_DEV_H_
+
+#include <linux/major.h>
+#include <linux/types.h>
+#include <linux/kdev_t.h>
+
+enum {
+ Root_NFS = MKDEV(UNNAMED_MAJOR, 255),
+ Root_CIFS = MKDEV(UNNAMED_MAJOR, 254),
+ Root_Generic = MKDEV(UNNAMED_MAJOR, 253),
+ Root_RAM0 = MKDEV(RAMDISK_MAJOR, 0),
+};
+
+extern dev_t ROOT_DEV;
+
+#endif