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use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages

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After all that's what they are intended for.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Beulich
2010-10-26 14:22:27 -07:00
committed by Linus Torvalds
parent b647277681
commit 3ecb01df32
5 changed files with 13 additions and 13 deletions
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mm/memory.c
+1 -1
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@@ -2080,7 +2080,7 @@ static inline void cow_user_page(struct page *dst, struct page *src, unsigned lo
* zeroes.
*/
if (__copy_from_user_inatomic(kaddr, uaddr, PAGE_SIZE))
memset(kaddr, 0, PAGE_SIZE);
clear_page(kaddr);
kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(dst);
} else