From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56CD5ECE59D for ; Wed, 16 Oct 2019 07:12:41 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 24FB02082C for ; Wed, 16 Oct 2019 07:12:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 24FB02082C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ah.jp.nec.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id AF5438E0005; Wed, 16 Oct 2019 03:12:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id AA6E28E0001; Wed, 16 Oct 2019 03:12:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9E3108E0005; Wed, 16 Oct 2019 03:12:40 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0158.hostedemail.com [216.40.44.158]) by kanga.kvack.org (Postfix) with ESMTP id 7E7688E0001 for ; Wed, 16 Oct 2019 03:12:40 -0400 (EDT) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with SMTP id 1AFAC612E for ; Wed, 16 Oct 2019 07:12:40 +0000 (UTC) X-FDA: 76048780080.29.girls91_8b8a077514d30 X-HE-Tag: girls91_8b8a077514d30 X-Filterd-Recvd-Size: 5630 Received: from tyo161.gate.nec.co.jp (tyo161.gate.nec.co.jp [114.179.232.161]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Wed, 16 Oct 2019 07:12:38 +0000 (UTC) Received: from mailgate01.nec.co.jp ([114.179.233.122]) by tyo161.gate.nec.co.jp (8.15.1/8.15.1) with ESMTPS id x9G7CXb3003239 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 16 Oct 2019 16:12:33 +0900 Received: from mailsv02.nec.co.jp (mailgate-v.nec.co.jp [10.204.236.94]) by mailgate01.nec.co.jp (8.15.1/8.15.1) with ESMTP id x9G7CXi3009686; Wed, 16 Oct 2019 16:12:33 +0900 Received: from mail01b.kamome.nec.co.jp (mail01b.kamome.nec.co.jp [10.25.43.2]) by mailsv02.nec.co.jp (8.15.1/8.15.1) with ESMTP id x9G7BSmS020645; Wed, 16 Oct 2019 16:12:33 +0900 Received: from bpxc99gp.gisp.nec.co.jp ([10.38.151.152] [10.38.151.152]) by mail01b.kamome.nec.co.jp with ESMTP id BT-MMP-9539196; Wed, 16 Oct 2019 16:09:26 +0900 Received: from BPXM23GP.gisp.nec.co.jp ([10.38.151.215]) by BPXC24GP.gisp.nec.co.jp ([10.38.151.152]) with mapi id 14.03.0439.000; Wed, 16 Oct 2019 16:09:25 +0900 From: Naoya Horiguchi To: "linux-mm@kvack.org" CC: Michal Hocko , David Hildenbrand , Oscar Salvador , "linux-kernel@vger.kernel.org" , Andrew Morton Subject: [PATCH] mm, soft-offline: convert parameter to pfn Thread-Topic: [PATCH] mm, soft-offline: convert parameter to pfn Thread-Index: AQHVg/CjSPbKnBteSU6QJtzEs3jIHA== Date: Wed, 16 Oct 2019 07:09:24 +0000 Message-ID: <20191016070924.GA10178@hori.linux.bs1.fc.nec.co.jp> Accept-Language: en-US, ja-JP Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.34.125.150] Content-Type: text/plain; charset="iso-2022-jp" Content-ID: <5974334D3EC89443ADA33ACB060FCF0D@gisp.nec.co.jp> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-TM-AS-MML: disable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, I wrote a simple cleanup for parameter of soft_offline_page(), based on thread https://lkml.org/lkml/2019/10/11/57. I know that we need more cleanup on hwpoison-inject, but I think that will be mentioned in re-write patchset Oscar is preparing now. So let me shared only this part as a separate one now. Thanks, Naoya Horiguchi --- From: Naoya Horiguchi Date: Wed, 16 Oct 2019 15:49:00 +0900 Subject: [PATCH] mm, soft-offline: convert parameter to pfn Currently soft_offline_page() receives struct page, and its sibling memory_failure() receives pfn. This discrepancy looks weird and makes precheck on pfn validity tricky. So let's align them. Signed-off-by: Naoya Horiguchi --- drivers/base/memory.c | 2 +- include/linux/mm.h | 2 +- mm/madvise.c | 2 +- mm/memory-failure.c | 8 ++++---- 4 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index e5485c22ef77..04e469c82852 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -540,7 +540,7 @@ static ssize_t soft_offline_page_store(struct device *d= ev, pfn >>=3D PAGE_SHIFT; if (!pfn_valid(pfn)) return -ENXIO; - ret =3D soft_offline_page(pfn_to_page(pfn)); + ret =3D soft_offline_page(pfn); return ret =3D=3D 0 ? count : ret; } =20 diff --git a/include/linux/mm.h b/include/linux/mm.h index 3eba26324ff1..0a452020edf5 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2783,7 +2783,7 @@ extern int sysctl_memory_failure_early_kill; extern int sysctl_memory_failure_recovery; extern void shake_page(struct page *p, int access); extern atomic_long_t num_poisoned_pages __read_mostly; -extern int soft_offline_page(struct page *page); +extern int soft_offline_page(unsigned long pfn); =20 =20 /* diff --git a/mm/madvise.c b/mm/madvise.c index fd221b610b52..df198d1e5e2e 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -893,7 +893,7 @@ static int madvise_inject_error(int behavior, if (behavior =3D=3D MADV_SOFT_OFFLINE) { pr_info("Soft offlining pfn %#lx at process virtual address %#lx\n", pfn, start); - ret =3D soft_offline_page(page); + ret =3D soft_offline_page(pfn); if (ret) return ret; } else { diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 4f16e0a7e7cc..eb4fd5e8d5e1 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1514,7 +1514,7 @@ static void memory_failure_work_func(struct work_stru= ct *work) if (!gotten) break; if (entry.flags & MF_SOFT_OFFLINE) - soft_offline_page(pfn_to_page(entry.pfn)); + soft_offline_page(entry.pfn); else memory_failure(entry.pfn, entry.flags); } @@ -1822,7 +1822,7 @@ static int soft_offline_free_page(struct page *page) =20 /** * soft_offline_page - Soft offline a page. - * @page: page to offline + * @pfn: pfn to soft-offline * * Returns 0 on success, otherwise negated errno. * @@ -1841,10 +1841,10 @@ static int soft_offline_free_page(struct page *page= ) * This is not a 100% solution for all memory, but tries to be * ``good enough'' for the majority of memory. */ -int soft_offline_page(struct page *page) +int soft_offline_page(unsigned long pfn) { int ret; - unsigned long pfn =3D page_to_pfn(page); + struct page *page =3D pfn_to_page(pfn); =20 if (is_zone_device_page(page)) { pr_debug_ratelimited("soft_offline: %#lx page is device page\n", --=20 2.17.1