userns_operations 30 fs/proc/namespaces.c &userns_operations, userns_operations 32 include/linux/proc_ns.h extern const struct proc_ns_operations userns_operations; userns_operations 7323 kernel/events/core.c task, &userns_operations); userns_operations 63 kernel/user.c .ns.ops = &userns_operations, userns_operations 112 kernel/user_namespace.c ns->ns.ops = &userns_operations; userns_operations 1310 kernel/user_namespace.c const struct proc_ns_operations userns_operations = {