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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 025A8C433C1 for ; Tue, 30 Mar 2021 17:52:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC827619D2 for ; Tue, 30 Mar 2021 17:52:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232578AbhC3Rvj (ORCPT ); Tue, 30 Mar 2021 13:51:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:34918 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232292AbhC3Rvd (ORCPT ); Tue, 30 Mar 2021 13:51:33 -0400 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 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 of 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; - mapping = page_mapping(page); + mapping = page_mapping_file(page); if (mapping && !mapping_mapped(mapping)) set_bit(PG_dcache_dirty, &page->flags); else { -- 2.28.0