Edit File: device_cgroup.h
#include <linux/fs.h> #ifdef CONFIG_CGROUP_DEVICE extern int __devcgroup_inode_permission(struct inode *inode, int mask); extern int devcgroup_inode_mknod(int mode, dev_t dev); static inline int devcgroup_inode_permission(struct inode *inode, int mask) { if (likely(!inode->i_rdev)) return 0; if (!S_ISBLK(inode->i_mode) && !S_ISCHR(inode->i_mode)) return 0; return __devcgroup_inode_permission(inode, mask); } #else static inline int devcgroup_inode_permission(struct inode *inode, int mask) { return 0; } static inline int devcgroup_inode_mknod(int mode, dev_t dev) { return 0; } #endif