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=-2.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,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 27156C31E4B for ; Thu, 13 Jun 2019 15:39:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E442A2080A for ; Thu, 13 Jun 2019 15:39:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="FmI5Hima" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726795AbfFMPjS (ORCPT ); Thu, 13 Jun 2019 11:39:18 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:38654 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731926AbfFMJzh (ORCPT ); Thu, 13 Jun 2019 05:55:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=gx1JcBWA6mIzaQBQDJm1Gfx2OyLZt5TKvy2MGx3QEB8=; b=FmI5HimasFGhpRPfW4DR/iRev 9PhmFsRSHefhFb49o8vkltx8inGtbdpqqG0yrWA3Z0D65QGc9yj0baihCj/HHgfCCPrHShh+7QHdN 2WhvZzkOeP8cp6ONq0oXThvIYYvrvai4aACMpkx3EwjskX5d0k6FmMTNGjG+YX8Rxm2fFg5Y8TajC utZY6WBHZbiHzFfThzHS3TEo8JSDfoS78vQvIXO9VitjCASFVPvyJePIjkK+tDA29VN1YuL20fTmr S2wYPMcfDrxO8tGTFa0Ob01+elkZP7hfcvTr9WhgfJH8NZhH7fk9t9cZFfg4Sct8vWhZm90On0D2q Tzffqnvhg==; Received: from mpp-cp1-natpool-1-198.ethz.ch ([82.130.71.198] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hbMSC-0008La-BF; Thu, 13 Jun 2019 09:55:32 +0000 From: Christoph Hellwig To: Jens Axboe , Ming Lei Cc: David Gibson , "Darrick J. Wong" , linux-block@vger.kernel.org, linux-xfs@vger.kernel.org Subject: alternative take on the same page merging leak fix v2 Date: Thu, 13 Jun 2019 11:55:27 +0200 Message-Id: <20190613095529.25005-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Hi Jens, hi Ming, this is the tested and split version of what I think is the better fix for the get_user_pages page leak, as it leaves the intelligence in the callers instead of in bio_try_to_merge_page. Changes since v1: - drop patches not required for 5.2 - added Reviewed-by tags