[PATCH] don't align virt_to_page() args

__pa() is always be consistent inside of a single page.  The next thing
virt_to_page() does after that is shift down the address, killing the bits
that __change_page_attr() just masked off.

Remove the superfluous masking.
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/mm/pageattr.c

@@ -114,7 +114,7 @@ __change_page_attr(struct page *page, pgprot_t prot)
 	kpte = lookup_address(address);
 	if (!kpte)
 		return -EINVAL;
-	kpte_page = virt_to_page(((unsigned long)kpte) & PAGE_MASK);
+	kpte_page = virt_to_page(kpte);
 	if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) { 
 		if ((pte_val(*kpte) & _PAGE_PSE) == 0) { 
 			pte_t old = *kpte;