linux-kernel - Re: [PATCH v2] libnvdimm, pmem: Add sysfs notifications to badblocks

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Date:   Thu, 15 Jun 2017 14:33:09 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Toshi Kani <toshi.kani@....com>
Cc:     Vishal L Verma <vishal.l.verma@...el.com>,
        Linda Knippers <linda.knippers@....com>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] libnvdimm, pmem: Add sysfs notifications to badblocks

On Mon, Jun 12, 2017 at 3:25 PM, Toshi Kani <toshi.kani@....com> wrote:
> Sysfs "badblocks" information may be updated during run-time that:
>  - MCE, SCI, and sysfs "scrub" may add new bad blocks
>  - Writes and ioctl() may clear bad blocks
>
> Add support to send sysfs notifications to sysfs "badblocks" file
> under region and pmem directories when their badblocks information
> is re-evaluated (but is not necessarily changed) during run-time.
>
> Signed-off-by: Toshi Kani <toshi.kani@....com>
> Cc: Dan Williams <dan.j.williams@...el.com>
> Cc: Vishal Verma <vishal.l.verma@...el.com>
> Cc: Linda Knippers <linda.knippers@....com>
> ---
> v2: Send notifications for the clearing case
> ---

This looks good to me, I've applied it, but I also want to extend the
ndctl unit tests to cover this mechanism.