CLEAR_USER(9)                       Memory Management in Linux                      CLEAR_USER(9)



NAME
       clear_user - Zero a block of memory in user space.

SYNOPSIS
       unsigned long clear_user(void __user * to, unsigned long n);

ARGUMENTS
       to
           Destination address, in user space.

       n
           Number of bytes to zero.

DESCRIPTION
       Zero a block of memory in user space.

       Returns number of bytes that could not be cleared. On success, this will be zero.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                             CLEAR_USER(9)