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From: Richard Weinberger <richard@nod.at>
To: "\"Qi Wang 王起 (qiwang)\"" <qiwang@micron.com>,
	"Jeff Lauruhn (jlauruhn)" <jlauruhn@micron.com>,
	"Boris Brezillon" <boris.brezillon@free-electrons.com>
Cc: "Iwo Mergler" <Iwo.Mergler@netcommwireless.com>,
	"dedekind1@gmail.com" <dedekind1@gmail.com>,
	"rnd4@dave-tech.it" <rnd4@dave-tech.it>,
	"Zoltan Szubbocsev (zszubbocsev)" <zszubbocsev@micron.com>,
	"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
	"\"Frank Liu 刘群 (frankliu)\"" <frankliu@micron.com>,
	"andrea.marson@dave.eu" <andrea.marson@dave.eu>,
	"\"Bean Huo 霍斌斌 (beanhuo)\"" <beanhuo@micron.com>
Subject: Re: detect and manage power cut on MLC NAND
Date: Sat, 21 Mar 2015 17:06:10 +0100	[thread overview]
Message-ID: <550D96F2.8020606@nod.at> (raw)
In-Reply-To: <71CF8D7F32C5C24C9CD1D0E02D52498A7717482E@NTXXIAMBX02.xacn.micron.com>

Am 21.03.2015 um 02:48 schrieb Qi Wang 王起 (qiwang):
> For this method, my idea is we can consider page 1 and page4 as one 
> page, to program page 1 and page 4 together. So if power cut occur, 
> both page 1 and page 4 (But one page corruption in software view)will 
> corrupt at same time, won't have issue for UBI/UBIFS.

I think we could add a new mtd driver which merges paired pages into bigger
pages. We already have "funky" mtd drivers like mtd_concat. What about a mtd_unpair?
This mtd driver could also do the scrambling.

Boris, what do you think?

Thanks,
//richard

  reply	other threads:[~2015-03-21 16:06 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <mailman.37706.1426822709.22890.linux-mtd@lists.infradead.org>
     [not found] ` <71CF8D7F32C5C24C9CD1D0E02D52498A7717444D@NTXXIAMBX02.xacn.micron.com>
2015-03-20  6:52   ` detect and manage power cut on MLC NAND Iwo Mergler
2015-03-20  7:44     ` Qi Wang 王起 (qiwang)
2015-03-20  8:58       ` Boris Brezillon
2015-03-20  9:07         ` Richard Weinberger
2015-03-20 15:05           ` Qi Wang 王起 (qiwang)
2015-03-20 15:19             ` Boris Brezillon
2015-03-20 15:49               ` Qi Wang 王起 (qiwang)
2015-03-20 16:48               ` Jeff Lauruhn (jlauruhn)
2015-03-21  1:48                 ` Qi Wang 王起 (qiwang)
2015-03-21 16:06                   ` Richard Weinberger [this message]
2015-03-20 15:45         ` Qi Wang 王起 (qiwang)
     [not found]         ` <71CF8D7F32C5C24C9CD1D0E02D52498A9DF42BF4@NTXXIAMBX02.xacn.micron.com>
2015-04-28  4:56           ` Boris Brezillon

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