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=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 DD59AC433DB for ; Tue, 30 Mar 2021 17:51:35 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 51921619B1 for ; Tue, 30 Mar 2021 17:51:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 51921619B1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C53726B0080; Tue, 30 Mar 2021 13:51:34 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id BF0F26B0081; Tue, 30 Mar 2021 13:51:34 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AB8286B0082; Tue, 30 Mar 2021 13:51:34 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0063.hostedemail.com [216.40.44.63]) by kanga.kvack.org (Postfix) with ESMTP id 8D03E6B0080 for ; Tue, 30 Mar 2021 13:51:34 -0400 (EDT) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 50C27824999B for ; Tue, 30 Mar 2021 17:51:34 +0000 (UTC) X-FDA: 77977282908.22.3A9BEAC Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf17.hostedemail.com (Postfix) with ESMTP id 53CA440002D5 for ; Tue, 30 Mar 2021 17:51:33 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 8A77B619CF; Tue, 30 Mar 2021 17:51:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617126692; bh=vH41Kssp0RaYEeKpGb5b46LRTKi8xAs+POHymbemXd8=; h=From:To:Cc:Subject:Date:From; b=po0B30taUe5XpZJC2Az5xXpgelji6O7EJa1/Wp5yi4Xp7IRBkUradL0YHGUX1NcHO YDpO9qK4MGDdbB2lKW6Pbbh2lZwVDEkyt/bnQzfLJBfjrd1AJZ+9ppNGpHy8KyGTCx NVqA3sYobm5EMjLkR1kIdtV4EDp8Gk2mqUp0MwVG8XYoXzZ57/rOK7picZEg4n8442 mthrvg2sdc+/nzSbJMGkIlS7m+1sPjurthlxnHY+TX7QLeU3eH1dA4cPeFAyN2g2kE QfV9Um64jc6HFuaN1eYnZDTKuJqBwCQ7nfBmPUG25oKE96S23TILORUoq8qtKbR2IA ATzUeTrf3gPJw== From: Mike Rapoport To: Andrew Morton Cc: Greentime Hu , Huang Ying , Matthew Wilcox , Mike Rapoport , Mike Rapoport , Nick Hu , Vincent Chen , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH] nds32: flush_dcache_page: use page_mapping_file to avoid races with swapoff Date: Tue, 30 Mar 2021 20:51:26 +0300 Message-Id: <20210330175126.26500-1-rppt@kernel.org> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 53CA440002D5 X-Stat-Signature: ek17fo9t5fu5kpnnzsc6jsqhyn4wbi1b Received-SPF: none (kernel.org>: No applicable sender policy available) receiver=imf17; identity=mailfrom; envelope-from=""; helo=mail.kernel.org; client-ip=198.145.29.99 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1617126693-687327 Content-Transfer-Encoding: quoted-printable 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: From: Mike Rapoport Commit cb9f753a3731 ("mm: fix races between swapoff and flush dcache") updated flush_dcache_page implementations on several architectures to use page_mapping_file() in order to avoid races between page_mapping() and swapoff(). This update missed arch/nds32 and there is a possibility of a race there. Replace page_mapping() with page_mapping_file() in nds32 implementation o= f flush_dcache_page(). Fixes: cb9f753a3731 ("mm: fix races between swapoff and flush dcache") Signed-off-by: Mike Rapoport --- arch/nds32/mm/cacheflush.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/nds32/mm/cacheflush.c b/arch/nds32/mm/cacheflush.c index 6eb98a7ad27d..ad5344ef5d33 100644 --- a/arch/nds32/mm/cacheflush.c +++ b/arch/nds32/mm/cacheflush.c @@ -238,7 +238,7 @@ void flush_dcache_page(struct page *page) { struct address_space *mapping; =20 - mapping =3D page_mapping(page); + mapping =3D page_mapping_file(page); if (mapping && !mapping_mapped(mapping)) set_bit(PG_dcache_dirty, &page->flags); else { --=20 2.28.0