提交 7e507eb6 编写于 作者: P Peter Rajnoha 提交者: Alasdair G Kergon

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: NKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: NPeter Rajnoha <prajnoha@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
上级 57cba5d3
...@@ -445,6 +445,7 @@ Your cooperation is appreciated. ...@@ -445,6 +445,7 @@ Your cooperation is appreciated.
233 = /dev/kmview View-OS A process with a view 233 = /dev/kmview View-OS A process with a view
234 = /dev/btrfs-control Btrfs control device 234 = /dev/btrfs-control Btrfs control device
235 = /dev/autofs Autofs control device 235 = /dev/autofs Autofs control device
236 = /dev/mapper/control Device-Mapper control device
240-254 Reserved for local use 240-254 Reserved for local use
255 Reserved for MISC_DYNAMIC_MINOR 255 Reserved for MISC_DYNAMIC_MINOR
......
...@@ -1599,12 +1599,15 @@ static const struct file_operations _ctl_fops = { ...@@ -1599,12 +1599,15 @@ static const struct file_operations _ctl_fops = {
}; };
static struct miscdevice _dm_misc = { static struct miscdevice _dm_misc = {
.minor = MISC_DYNAMIC_MINOR, .minor = MAPPER_CTRL_MINOR,
.name = DM_NAME, .name = DM_NAME,
.nodename = "mapper/control", .nodename = DM_DIR "/" DM_CONTROL_NODE,
.fops = &_ctl_fops .fops = &_ctl_fops
}; };
MODULE_ALIAS_MISCDEV(MAPPER_CTRL_MINOR);
MODULE_ALIAS("devname:" DM_DIR "/" DM_CONTROL_NODE);
/* /*
* Create misc character device and link to DM_DIR/control. * Create misc character device and link to DM_DIR/control.
*/ */
......
...@@ -11,6 +11,7 @@ ...@@ -11,6 +11,7 @@
#include <linux/types.h> #include <linux/types.h>
#define DM_DIR "mapper" /* Slashes not supported */ #define DM_DIR "mapper" /* Slashes not supported */
#define DM_CONTROL_NODE "control"
#define DM_MAX_TYPE_NAME 16 #define DM_MAX_TYPE_NAME 16
#define DM_NAME_LEN 128 #define DM_NAME_LEN 128
#define DM_UUID_LEN 129 #define DM_UUID_LEN 129
......
...@@ -38,6 +38,7 @@ ...@@ -38,6 +38,7 @@
#define KVM_MINOR 232 #define KVM_MINOR 232
#define BTRFS_MINOR 234 #define BTRFS_MINOR 234
#define AUTOFS_MINOR 235 #define AUTOFS_MINOR 235
#define MAPPER_CTRL_MINOR 236
#define MISC_DYNAMIC_MINOR 255 #define MISC_DYNAMIC_MINOR 255
struct device; struct device;
......
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