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=-5.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,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 8FCD7C43381 for ; Wed, 27 Mar 2019 16:17:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5299B2082F for ; Wed, 27 Mar 2019 16:17:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553703421; bh=Tmw+5hGHWrHaO/SBxQK1oTSA92/a7XaYQ9IqTgtb0is=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=0ImQ7z2Z16SFqeCZAJk8iVZuy1If8N1XVZ86waF1wFNY58+ZGc+0hAz9gQZW2jCLk DFzgYSPfXo46NzlA8iOJBsS3RwyBLGCbleFdMrwNx7+Q3JJOAsFZr6igILv37Thu5t Ms+0cGUtCiaC8/jCky2PugDaci8UXkSvMRA21C8M= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726126AbfC0QRB (ORCPT ); Wed, 27 Mar 2019 12:17:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:43064 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727173AbfC0QRA (ORCPT ); Wed, 27 Mar 2019 12:17:00 -0400 Received: from localhost (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 04300206C0; Wed, 27 Mar 2019 16:16:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553703420; bh=Tmw+5hGHWrHaO/SBxQK1oTSA92/a7XaYQ9IqTgtb0is=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=p+7+xxtfStv4Y1Z3sUR5sQVOszfzBICHid2XhBzlNIKtBUETPINYP5f1M/aBOhmwU Ptv/IYs5ndfH62QW8tr7g3BLKExZtC3KL/uRzg2pZRAiGTDnywhdvSdzlCdzntC5jL 8fmabxv59j0HZ7b31v+Qdc9aCL8Agb37Ye1CE8AY= Date: Wed, 27 Mar 2019 12:16:58 -0400 From: Sasha Levin To: Ming Lei Cc: linux-nvme@lists.infradead.org, Christoph Hellwig , Yi Zhang , Sagi Grimberg , Chaitanya Kulkarni , stable@vger.kernel.org Subject: Re: [PATCH stable only] nvmet: set loop queue's segment boundary mask as PAGE_SIZE - 1 Message-ID: <20190327161658.GL25262@sasha-vm> References: <20190327090230.12671-1-ming.lei@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20190327090230.12671-1-ming.lei@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Wed, Mar 27, 2019 at 05:02:30PM +0800, Ming Lei wrote: >NVMe target only accepts single-page sg list, either file or block >device backed target code follows this assumption. > >However, loop target is one exception, given the sg list is from >the host queue directly. > >This patch sets loop queue's segment boundary mask as PAGE_SIZE - 1 >for following NVMe target assumption. > >Reported-by: Yi Zhang >Fixes: 3a85a5de29ea ("nvme-loop: add a NVMe loopback host driver") >Cc: Yi Zhang >Cc: Sagi Grimberg >Cc: Chaitanya Kulkarni >Cc: >Signed-off-by: Ming Lei Could you provide some background as to why this is -stable only in the commit message? -- Thanks, Sasha