dm: allow autoloading of dm mod
Add devname:mapper/control and MAPPER_CTRL_MINOR module alias
to support dm-mod module autoloading.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Peter Rajnoha <prajnoha@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h
index 43b2de1..49eab36 100644
--- a/include/linux/dm-ioctl.h
+++ b/include/linux/dm-ioctl.h
@@ -11,6 +11,7 @@
#include <linux/types.h>
#define DM_DIR "mapper" /* Slashes not supported */
+#define DM_CONTROL_NODE "control"
#define DM_MAX_TYPE_NAME 16
#define DM_NAME_LEN 128
#define DM_UUID_LEN 129
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index f6c9b7d..bafffc7 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -38,6 +38,7 @@
#define KVM_MINOR 232
#define BTRFS_MINOR 234
#define AUTOFS_MINOR 235
+#define MAPPER_CTRL_MINOR 236
#define MISC_DYNAMIC_MINOR 255
struct device;