pub fn sys_umount2(
locked: &mut Locked<Unlocked>,
current_task: &CurrentTask,
target_addr: UserCString,
flags: u32,
) -> Result<(), Errno>pub fn sys_umount2(
locked: &mut Locked<Unlocked>,
current_task: &CurrentTask,
target_addr: UserCString,
flags: u32,
) -> Result<(), Errno>