linux-kernel - Re: [v4 2/2] device-dax: "Hotremove" persistent memory that is used like normal RAM

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Message-ID: <CA+CK2bA-jVEXvF-gi1N=8jD-+MPsqtn0aod=iBNJ0TrgiqqBSg@mail.gmail.com>
Date:   Thu, 2 May 2019 13:44:24 -0400
From:   Pavel Tatashin <pasha.tatashin@...een.com>
To:     Sasha Levin <sashal@...nel.org>
Cc:     James Morris <jmorris@...ei.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Keith Busch <keith.busch@...el.com>,
        Vishal L Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Ross Zwisler <zwisler@...nel.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        "Huang, Ying" <ying.huang@...el.com>,
        Fengguang Wu <fengguang.wu@...el.com>,
        Borislav Petkov <bp@...e.de>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Yaowei Bai <baiyaowei@...s.chinamobile.com>,
        Takashi Iwai <tiwai@...e.de>,
        Jérôme Glisse <jglisse@...hat.com>,
        David Hildenbrand <david@...hat.com>
Subject: Re: [v4 2/2] device-dax: "Hotremove" persistent memory that is used
 like normal RAM

> >device-dax/kmem driver. So, operations should look like this:
> >
> >echo offline > echo offline > /sys/devices/system/memory/memoryN/state

>
> This looks wrong :)
>

Indeed, I  will fix patch log in the next version.

Thank you,
Pasha