From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754643Ab3LEIyJ (ORCPT ); Thu, 5 Dec 2013 03:54:09 -0500 Received: from szxga01-in.huawei.com ([119.145.14.64]:43066 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751791Ab3LEIyG (ORCPT ); Thu, 5 Dec 2013 03:54:06 -0500 Message-ID: <52A03EE4.6030609@huawei.com> Date: Thu, 5 Dec 2013 16:52:52 +0800 From: Jianguo Wu User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: Andrew Morton CC: Johannes Weiner , Minchan Kim , , , qiuxishi Subject: [PATCH] mm: do_mincore() cleanup Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.135.74.216] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Two cleanups: 1. remove redundant codes for hugetlb pages. 2. end = pmd_addr_end(addr, end) restricts [addr, end) within PMD_SIZE, this may increase do_mincore() calls, remove it. Signed-off-by: Jianguo Wu --- mm/mincore.c | 7 ------- 1 files changed, 0 insertions(+), 7 deletions(-) diff --git a/mm/mincore.c b/mm/mincore.c index da2be56..1016233 100644 --- a/mm/mincore.c +++ b/mm/mincore.c @@ -225,13 +225,6 @@ static long do_mincore(unsigned long addr, unsigned long pages, unsigned char *v end = min(vma->vm_end, addr + (pages << PAGE_SHIFT)); - if (is_vm_hugetlb_page(vma)) { - mincore_hugetlb_page_range(vma, addr, end, vec); - return (end - addr) >> PAGE_SHIFT; - } - - end = pmd_addr_end(addr, end); - if (is_vm_hugetlb_page(vma)) mincore_hugetlb_page_range(vma, addr, end, vec); else -- 1.7.1