From e7bbdd071314b52507e6c615e2cec90d46f82c57 Mon Sep 17 00:00:00 2001
From: Alexander Kuleshov <kuleshovmail@gmail.com>
Date: Thu, 5 Nov 2015 18:46:38 -0800
Subject: [PATCH] mm/mincore: use offset_in_page macro

linux/mm.h provides offset_in_page() macro.  Let's use already predefined
macro instead of (addr & ~PAGE_MASK).

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/mincore.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/mincore.c b/mm/mincore.c
index be25efde64a4..14bb9fb37f0c 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -234,7 +234,7 @@ SYSCALL_DEFINE3(mincore, unsigned long, start, size_t, len,
 
 	/* This also avoids any overflows on PAGE_CACHE_ALIGN */
 	pages = len >> PAGE_SHIFT;
-	pages += (len & ~PAGE_MASK) != 0;
+	pages += (offset_in_page(len)) != 0;
 
 	if (!access_ok(VERIFY_WRITE, vec, pages))
 		return -EFAULT;
-- 
2.20.1