From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=Xzu3=R6=vger.kernel.org=stable-owner@kernel.org>
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=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,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 8AF27C43381
	for <stable@archiver.kernel.org>; Wed, 27 Mar 2019 08:15:58 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by mail.kernel.org (Postfix) with ESMTP id 5F5072075D
	for <stable@archiver.kernel.org>; Wed, 27 Mar 2019 08:15:58 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1725768AbfC0IP6 (ORCPT <rfc822;stable@archiver.kernel.org>);
        Wed, 27 Mar 2019 04:15:58 -0400
Received: from verein.lst.de ([213.95.11.211]:40414 "EHLO newverein.lst.de"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1725763AbfC0IP5 (ORCPT <rfc822;stable@vger.kernel.org>);
        Wed, 27 Mar 2019 04:15:57 -0400
Received: by newverein.lst.de (Postfix, from userid 2407)
        id 9DCCE68B05; Wed, 27 Mar 2019 09:15:49 +0100 (CET)
Date:   Wed, 27 Mar 2019 09:15:49 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     Ming Lei <tom.leiming@gmail.com>
Cc:     Christoph Hellwig <hch@lst.de>, Ming Lei <ming.lei@redhat.com>,
        Yi Zhang <yi.zhang@redhat.com>,
        Sagi Grimberg <sagi@grimberg.me>,
        Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>,
        stable <stable@vger.kernel.org>,
        linux-nvme <linux-nvme@lists.infradead.org>
Subject: Re: [PATCH 2/4] nvmet: fix computation of io vector number
Message-ID: <20190327081549.GF20525@lst.de>
References: <20190326031928.9499-1-ming.lei@redhat.com> <20190326031928.9499-3-ming.lei@redhat.com> <20190326073800.GB21617@lst.de> <CACVXFVNTOVcP7N_MCZ+JEUJX09WUH0Ds3yZ_DELrSkAfPEDrpg@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CACVXFVNTOVcP7N_MCZ+JEUJX09WUH0Ds3yZ_DELrSkAfPEDrpg@mail.gmail.com>
User-Agent: Mutt/1.5.17 (2007-11-01)
Sender: stable-owner@vger.kernel.org
Precedence: bulk
List-ID: <stable.vger.kernel.org>
X-Mailing-List: stable@vger.kernel.org

On Tue, Mar 26, 2019 at 03:50:01PM +0800, Ming Lei wrote:
> On Tue, Mar 26, 2019 at 3:38 PM Christoph Hellwig <hch@lst.de> wrote:
> >
> > I'd rather see this merged with the last one (and patch 3 dropped as
> > it just gets removed entirely in 4) - that fixes all the issues together
> > and doesn't require your patch 1 as as a workaround first.
> 
> Patch 1 isn't a workaround, which is needed for stable tree, and
> the other fixes won't work without patch 1.
> 
> However, we may revert patch 1 for 5.1 in which multi-page bvec
> is supported.

Lets do it another way around - put the proper fix into 5.1-rc and
only apply patch 1 for stable.  No need to put something in and
immediately revert it.