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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 0D729C433B4 for ; Thu, 6 May 2021 20:01:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C7ECC61157 for ; Thu, 6 May 2021 20:01:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231758AbhEFUCK (ORCPT ); Thu, 6 May 2021 16:02:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229622AbhEFUCI (ORCPT ); Thu, 6 May 2021 16:02:08 -0400 Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 60C14C061574 for ; Thu, 6 May 2021 13:01:08 -0700 (PDT) Received: by mail-ej1-x631.google.com with SMTP id zg3so10107772ejb.8 for ; Thu, 06 May 2021 13:01:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=xcSDKJPl8yVWmYkatqD6oRhplFv7T5bCCK0jErkQLSE=; b=nx340VYLaEb+cobw5tYbTxosxXv2CKm7oSVLoMAMZ06nUA2+iwJ93mMyoHYtpBeh+z XCw4gMELnoLyOCPgRMH9JzZ+V/ZKZA48Xuppda8xDYKPoA8298rGH38oaTwmUuaAZLxK CEore154VaTgf1a+Eh9RaUqNeLT3jIZgbdK46NMLm3eH1LwYm7SQVUuR0Xh9hRdjtb8m zLarziFIzeu4pHEGWRhsecNJNejP23iXy3kCIaOZOLrpPxang1NafPd7aKpuBlx060c4 4r0uz8JqEyJT7XFoRFdooWeWN2z+nRwHNFPNKGimLAuQRDivlIaUdY5PBIfbTxaWWvxp TVJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=xcSDKJPl8yVWmYkatqD6oRhplFv7T5bCCK0jErkQLSE=; b=bbWJqhEvnXy40UlQ0J7RUNu+kvd54ZIOElLMgMI2oxFBTBDKKBrvl079e8lY8TuEQv rMnOZrDzwI+e6HjJeZNmCQiJawwwKOFvSgxBEB/dV0LZiaS38wYTuyAcAAJzETwYihro pGuWICoUC1+c2OIi+su5NbgvrLXLisEQjg8D1rBsozuadfHfnJ4T5SDT+cV+b46iSly2 7p/Pz41pZ2Mkqeg+RmHv8xAaCBFjtu7wwL4mGqKu28XxlvuzETbSpE7IfET/YyWGXOg6 er5LCfzEFFsyu6xCmckRN5pjW2rFBImK+yRC3Ogq9zrpZk9iSdV/lpYCMZks1beaKLgd FspQ== X-Gm-Message-State: AOAM530QqNpBn69iwSUY5hsMDn57Ri4EEEGG4+yjiv+mBInfdsy5uVFk JmE+e7szJQaChlFBw65NU2IvywUOSg== X-Google-Smtp-Source: ABdhPJzN7tylTZ2eeCQsSfRXEhf3znK4CDJzknCnVDCuK87Q5SRqWAh+IFnVfvDG2Ek2Mywx112ETw== X-Received: by 2002:a17:906:747:: with SMTP id z7mr6394560ejb.252.1620331267055; Thu, 06 May 2021 13:01:07 -0700 (PDT) Received: from localhost.localdomain ([46.53.253.96]) by smtp.gmail.com with ESMTPSA id cw6sm1968737ejb.32.2021.05.06.13.01.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 May 2021 13:01:06 -0700 (PDT) Date: Thu, 6 May 2021 23:01:04 +0300 From: Alexey Dobriyan To: bcrl@kvack.org, akpm@linux-foundation.org Cc: linux-aio@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] aio: add missing dcache flush Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ring page is mapped by kernel and updated so dcache must be flushed. Signed-off-by: Alexey Dobriyan --- Not tested but the usage looks fishy. fs/aio.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/aio.c +++ b/fs/aio.c @@ -653,6 +653,7 @@ static int ioctx_add_table(struct kioctx *ctx, struct mm_struct *mm) ring = kmap_atomic(ctx->ring_pages[0]); ring->id = ctx->id; kunmap_atomic(ring); + flush_dcache_page(ctx->ring_pages[0]); return 0; }