From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 19 Jun 2013 00:06:07 +0000 (+1000)
Subject: vmalloc-introduce-remap_vmalloc_range_partial-fix
X-Git-Tag: next-20130619~2^2~510
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6f3841eb4f9facfe6b59d2ce2ce2d26cb70491f9;p=karo-tx-linux.git

vmalloc-introduce-remap_vmalloc_range_partial-fix

use PAGE_ALIGNED()

Cc: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Lisa Mitchell <lisa.mitchell@hp.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index d9a9f4f6ee07..b7259906a806 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1476,10 +1476,9 @@ static void __vunmap(const void *addr, int deallocate_pages)
 	if (!addr)
 		return;
 
-	if ((PAGE_SIZE-1) & (unsigned long)addr) {
-		WARN(1, KERN_ERR "Trying to vfree() bad address (%p)\n", addr);
+	if (WARN(!PAGE_ALIGNED(addr), "Trying to vfree() bad address (%p)\n",
+			addr));
 		return;
-	}
 
 	area = remove_vm_area(addr);
 	if (unlikely(!area)) {
@@ -2170,8 +2169,7 @@ int remap_vmalloc_range_partial(struct vm_area_struct *vma, unsigned long uaddr,
 
 	size = PAGE_ALIGN(size);
 
-	if (((PAGE_SIZE-1) & (unsigned long)uaddr) ||
-	    ((PAGE_SIZE-1) & (unsigned long)kaddr))
+	if (!PAGE_ALIGNED(uaddr) || !PAGE_ALIGNED(kaddr))
 		return -EINVAL;
 
 	area = find_vm_area(kaddr);