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=-7.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 02B8DC04AB3 for ; Mon, 27 May 2019 13:29:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9DD462075E for ; Mon, 27 May 2019 13:29:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amarulasolutions.com header.i=@amarulasolutions.com header.b="WzL1+1C2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726610AbfE0N3G (ORCPT ); Mon, 27 May 2019 09:29:06 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:43092 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726264AbfE0N3G (ORCPT ); Mon, 27 May 2019 09:29:06 -0400 Received: by mail-wr1-f68.google.com with SMTP id l17so8549890wrm.10 for ; Mon, 27 May 2019 06:29:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=m+dXzPFPF0QC/08N8/jLGXcjGIV+v/pjQg8Lvb1aVuM=; b=WzL1+1C2hQtI9ONr/IqYQEZ+4v1XArIttWiAETlxVdn4U0Xd1Gr6peUX1hFoSTulxo DOB5jUtmPKC9AOLSl7nkNoLllSdcLbKe/8sQsKDi3f9Ak0liBKjC/S39b3sLyJdkJCc0 5WKLezBgJUOPDVnZUgdTZyP85Qg4h94tAac+Q= 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:references :mime-version:content-disposition:in-reply-to:user-agent; bh=m+dXzPFPF0QC/08N8/jLGXcjGIV+v/pjQg8Lvb1aVuM=; b=oGBbBI7cyVXOOBWhCkPv198GojNdv5cSdZvFuwEetHE6tHjBf68Z70u3dljCsoc4ba Nm1mZi6qjAihWqkBzrQtudT3eoNmeDrycX6WWZjvpe1UPCNM4w0yFNgL/Z8x55P8794v kBXTX7H4wh06yEpcnd+FStrz6dmCHWlaRVHY9fnKmGTHxFesb5rWGCfrPOj6amn0QoIL 2jPa0YN5za74Xx2W0psLouyssj85HkHFsMJd59a1q7yw419v/m1mJXXlElKw0FtMCsz4 w2Yy3Ppu4nZRA4keymfg4zru1Dzqu5S9GDNdEz/F48zMpQoLb8tlOQj11trb2sMdWcS+ OTmw== X-Gm-Message-State: APjAAAWbMJdG1AXa/f6GwgIffr6q8Z78SlmB4K/ivw7glqjf/5SrqRaF ERW4NcUlXswGlMhY4g4JTCik5Q== X-Google-Smtp-Source: APXvYqx3FVL85vZsOLhYUKwWkJDyaB5qlY0duEg6rDcbtKj+K4FAMYFxlrwC4j8WWJveRBfJUvOY6Q== X-Received: by 2002:adf:8062:: with SMTP id 89mr3791540wrk.97.1558963744716; Mon, 27 May 2019 06:29:04 -0700 (PDT) Received: from andrea (86.100.broadband17.iol.cz. [109.80.100.86]) by smtp.gmail.com with ESMTPSA id n10sm5377784wrr.11.2019.05.27.06.29.03 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 27 May 2019 06:29:04 -0700 (PDT) Date: Mon, 27 May 2019 15:28:57 +0200 From: Andrea Parri To: "Paul E. McKenney" Cc: "Huang, Ying" , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Hugh Dickins , Minchan Kim , Johannes Weiner , Tim Chen , Mel Gorman , =?iso-8859-1?B?Suly9G1l?= Glisse , Michal Hocko , Andrea Arcangeli , Yang Shi , David Rientjes , Rik van Riel , Jan Kara , Dave Jiang , Daniel Jordan Subject: Re: [PATCH -mm] mm, swap: Simplify total_swapcache_pages() with get_swap_device() Message-ID: <20190527132857.GA1429@andrea> References: <20190527082714.12151-1-ying.huang@intel.com> <20190527101536.GI28207@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190527101536.GI28207@linux.ibm.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > But where do I find get_swap_device() and put_swap_device()? I do not > see them in current mainline. You should see them in the -mm tree: https://ozlabs.org/~akpm/mmots/broken-out/mm-swap-fix-race-between-swapoff-and-some-swap-operations.patch or http://git.cmpxchg.org/cgit.cgi/linux-mmots.git/commit/?id=87efc56527b92a59d15c5d4e4b05f875b276a59a Thanks, Andrea