#include <linux/kmod.h>
#include <linux/major.h>
#include <linux/smp_lock.h>
+#include <linux/device_cgroup.h>
#include <linux/highmem.h>
#include <linux/blkdev.h>
#include <linux/module.h>
{
struct module *owner = NULL;
struct gendisk *disk;
- int ret = -ENXIO;
+ int ret;
int part;
+ ret = devcgroup_inode_permission(bdev->bd_inode, file->f_mode);
+ if (ret != 0)
+ return ret;
+
+ ret = -ENXIO;
file->f_mapping = bdev->bd_inode->i_mapping;
lock_kernel();
disk = get_gendisk(bdev->bd_dev, &part);