umount           1707 fs/namespace.c SYSCALL_DEFINE2(umount, char __user *, name, int, flags)
umount            194 tools/testing/selftests/filesystems/devpts_pts.c 	ret = umount("/dev/pts");
umount            201 tools/testing/selftests/filesystems/devpts_pts.c 	(void)umount("/dev/ptmx");