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x86, mm: pass in 'total' to __copy_from_user_*nocache()

Browse source 
Impact: cleanup, enable future change

Add a 'total bytes copied' parameter to __copy_from_user_*nocache(),
and update all the callsites.

The parameter is not used yet - architecture code can use it to
more intelligently decide whether the copy should be cached or
non-temporal.

Cc: Salman Qazi <sqazi@google.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-02-25 08:21:52 +01:00
commit 3255aa2eb6
6 changed files with 14 additions and 13 deletions
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4
include/linux/uaccess.h
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@ -41,13 +41,13 @@ static inline void pagefault_enable(void)
#ifndef ARCH_HAS_NOCACHE_UACCESS
static inline unsigned long __copy_from_user_inatomic_nocache(void *to,
const void __user *from, unsigned long n)
const void __user *from, unsigned long n, unsigned long total)
{
return __copy_from_user_inatomic(to, from, n);
}
static inline unsigned long __copy_from_user_nocache(void *to,
const void __user *from, unsigned long n)
const void __user *from, unsigned long n, unsigned long total)
{
return __copy_from_user(to, from, n);
}