From: Tanya Brokhman <tlinder@codeaurora.org>
To: Richard Weinberger <richard.weinberger@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>,
linux-arm-msm@vger.kernel.org,
Pratibhasagar V <pratibha@codeaurora.org>,
open list <linux-kernel@vger.kernel.org>,
dedeking1@gmail.com,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [RFC/PATCH 5/5] mtd: ubi: Add sysfs entry to force all pebs' scan
Date: Sun, 28 Sep 2014 11:53:56 +0300 [thread overview]
Message-ID: <5427CCA4.6060909@codeaurora.org> (raw)
In-Reply-To: <CAFLxGvz5RXmC3vuCWkNSiAn91j6dC_9Q9XF3njObb_jBbL-ohw@mail.gmail.com>
On 9/28/2014 11:42 AM, Richard Weinberger wrote:
> Tanya,
>
> On Sun, Sep 28, 2014 at 8:38 AM, Tanya Brokhman <tlinder@codeaurora.org> wrote:
>> A given eraseblock can be read many times or not at all.
>> We do not have the account of such eraseblocks that have
>> not been accessed since a pre-defined threshold interval.
>> By means of scanning the entire flash device it is possible to identify
>> all such eraseblocks.
>>
>> Add a sysfs entry to force scan on all the PEBs on demand basis.
>>
>> The sysfs entry would be available under /sys/class/ubi/ubiX/peb_scan
>> - echo 1 to this entry would trigger the scan, ignored if in progress
>> - On reading returns the scan status (1 = Scan executing, 0 = Scan not
>> executing)
>
> Did you see that?
> http://linux-kernel.2935.n7.nabble.com/RFC-UBI-bitrot-checking-td949453.html
> Maybe we can combine our work.
> Although your patch seems to be in better shape than mine. :)
oh, I'm sorry, missed that (its new :) )
this patch was tested thoroughly and working. I would appreciate if you
could review this patch and perhaps we could improve it if required.
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation
WARNING: multiple messages have this Message-ID (diff)
From: Tanya Brokhman <tlinder@codeaurora.org>
To: Richard Weinberger <richard.weinberger@gmail.com>
Cc: Pratibhasagar V <pratibha@codeaurora.org>,
linux-arm-msm@vger.kernel.org,
Artem Bityutskiy <dedekind1@gmail.com>,
open list <linux-kernel@vger.kernel.org>,
dedeking1@gmail.com,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [RFC/PATCH 5/5] mtd: ubi: Add sysfs entry to force all pebs' scan
Date: Sun, 28 Sep 2014 11:53:56 +0300 [thread overview]
Message-ID: <5427CCA4.6060909@codeaurora.org> (raw)
In-Reply-To: <CAFLxGvz5RXmC3vuCWkNSiAn91j6dC_9Q9XF3njObb_jBbL-ohw@mail.gmail.com>
On 9/28/2014 11:42 AM, Richard Weinberger wrote:
> Tanya,
>
> On Sun, Sep 28, 2014 at 8:38 AM, Tanya Brokhman <tlinder@codeaurora.org> wrote:
>> A given eraseblock can be read many times or not at all.
>> We do not have the account of such eraseblocks that have
>> not been accessed since a pre-defined threshold interval.
>> By means of scanning the entire flash device it is possible to identify
>> all such eraseblocks.
>>
>> Add a sysfs entry to force scan on all the PEBs on demand basis.
>>
>> The sysfs entry would be available under /sys/class/ubi/ubiX/peb_scan
>> - echo 1 to this entry would trigger the scan, ignored if in progress
>> - On reading returns the scan status (1 = Scan executing, 0 = Scan not
>> executing)
>
> Did you see that?
> http://linux-kernel.2935.n7.nabble.com/RFC-UBI-bitrot-checking-td949453.html
> Maybe we can combine our work.
> Although your patch seems to be in better shape than mine. :)
oh, I'm sorry, missed that (its new :) )
this patch was tested thoroughly and working. I would appreciate if you
could review this patch and perhaps we could improve it if required.
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation
next prev parent reply other threads:[~2014-09-28 8:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-28 6:38 [RFC/PATCH 5/5] mtd: ubi: Add sysfs entry to force all pebs' scan Tanya Brokhman
2014-09-28 6:38 ` Tanya Brokhman
2014-09-28 6:38 ` Tanya Brokhman
2014-09-28 8:42 ` Richard Weinberger
2014-09-28 8:42 ` Richard Weinberger
2014-09-28 8:53 ` Tanya Brokhman [this message]
2014-09-28 8:53 ` Tanya Brokhman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5427CCA4.6060909@codeaurora.org \
--to=tlinder@codeaurora.org \
--cc=computersforpeace@gmail.com \
--cc=dedekind1@gmail.com \
--cc=dedeking1@gmail.com \
--cc=dwmw2@infradead.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=pratibha@codeaurora.org \
--cc=richard.weinberger@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.