__clear_user man page on OpenSuSE

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__CLEAR_USER(9)		  Memory Management in Linux	       __CLEAR_USER(9)

NAME
       __clear_user - Zero a block of memory in user space, with less
       checking.

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. Caller must check the specified
       block with access_ok before calling this function.

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

COPYRIGHT
Kernel Hackers Manual 3.11	 November 2013		       __CLEAR_USER(9)
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