From: Dave Hansen <haveblue@us.ibm.com>
__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>
---
25-akpm/arch/i386/mm/pageattr.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/i386/mm/pageattr.c~dont-align-virt_to_page-args arch/i386/mm/pageattr.c
--- 25/arch/i386/mm/pageattr.c~dont-align-virt_to_page-args 2004-08-23 23:07:43.425444472 -0700
+++ 25-akpm/arch/i386/mm/pageattr.c 2004-08-23 23:07:43.428444016 -0700
@@ -114,7 +114,7 @@ __change_page_attr(struct page *page, pg
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;
_