#define buffer_migrate_page_norefs NULL
#endif
+int may_setattr(struct user_namespace *mnt_userns, struct inode *inode,
+ unsigned int ia_valid);
int setattr_prepare(struct user_namespace *, struct dentry *, struct iattr *);
extern int inode_newsize_ok(const struct inode *, loff_t offset);
void setattr_copy(struct user_namespace *, struct inode *inode,