Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755705AbbHYOGt (ORCPT ); Tue, 25 Aug 2015 10:06:49 -0400 Received: from m12-18.163.com ([220.181.12.18]:42519 "EHLO m12-18.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751691AbbHYOGr (ORCPT ); Tue, 25 Aug 2015 10:06:47 -0400 From: Yaowei Bai To: akpm@linux-foundation.org, mgorman@suse.de, vbabka@suse.cz, mhocko@kernel.org, js1304@gmail.com, hannes@cmpxchg.org, alexander.h.duyck@redhat.com, sasha.levin@oracle.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] mm/page_alloc: change sysctl_lower_zone_reserve_ratio to sysctl_lowmem_reserve_ratio Date: Tue, 25 Aug 2015 22:01:30 +0800 Message-Id: <1440511291-3990-1-git-send-email-bywxiaobai@163.com> X-Mailer: git-send-email 1.9.1 X-CM-TRANSID: EsCowECJ3V21ddxVv1BiAg--.23177S3 X-Coremail-Antispam: 1Uf129KBjvJXoWrKrykXF15Zw1DtrWUKr18uFg_yoW8JF15pr Z7ur1DXF1UZ34xAFWkG3Zrur18Za1aqF17tr4qy39xZr13Cr9IgryqgFZxZr1rCrZ3WFWS vF42q34xZw47A3DanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07jwXo7UUUUU= X-Originating-IP: [114.216.26.218] X-CM-SenderInfo: xe1z5x5dretxi6rwjhhfrp/1tbiUBphT1WBPu3unwAAsS Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1463 Lines: 41 We use sysctl_lowmem_reserve_ratio rather than sysctl_lower_zone_reserve_ratio to determine how aggressive the kernel is in defending lowmem from the possibility of being captured into pinned user memory. To avoid misleading, correct it in some comments. Signed-off-by: Yaowei Bai --- mm/page_alloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 0a0acdb..b730f7d 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6043,7 +6043,7 @@ void __init page_alloc_init(void) } /* - * calculate_totalreserve_pages - called when sysctl_lower_zone_reserve_ratio + * calculate_totalreserve_pages - called when sysctl_lowmem_reserve_ratio * or min_free_kbytes changes. */ static void calculate_totalreserve_pages(void) @@ -6087,7 +6087,7 @@ static void calculate_totalreserve_pages(void) /* * setup_per_zone_lowmem_reserve - called whenever - * sysctl_lower_zone_reserve_ratio changes. Ensures that each zone + * sysctl_lowmem_reserve_ratio changes. Ensures that each zone * has a correct pages reserved value, so an adequate number of * pages are left in the zone after a successful __alloc_pages(). */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/