From: Artem Bityutskiy <dedekind1@gmail.com>
To: Brian Norris <computersforpeace@gmail.com>
Cc: Dan Carpenter <error27@gmail.com>,
Kulikov Vasiliy <segooon@gmail.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Nicolas Ferre <nicolas.ferre@atmel.com>,
Dominik Brodowski <linux@dominikbrodowski.net>,
Peter Wippich <pewi@gw-instruments.de>,
Gabor Juhos <juhosg@openwrt.org>,
linux-mtd@lists.infradead.org,
Jonas Gorski <jonas.gorski@gmail.com>,
Jamie Iles <jamie@jamieiles.com>,
Ivan Djelic <ivan.djelic@parrot.com>,
Robert Jarzmik <robert.jarzmik@free.fr>,
David Woodhouse <David.Woodhouse@intel.com>,
Maxim Levitsky <maximlevitsky@gmail.com>,
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
Kevin Cernekee <cernekee@gmail.com>,
Barry Song <21cnbao@gmail.com>,
Jim Quinlan <jim2101024@gmail.com>,
Andres Salomon <dilinger@queued.net>,
Axel Lin <axel.lin@gmail.com>, Anatolij Gustschin <agust@denx.de>,
Mike Frysinger <vapier@gentoo.org>, Arnd Bergmann <arnd@arndb.de>,
Lei Wen <leiwen@marvell.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Artem Bityutskiy <artem.bityutskiy@intel.com>,
Florian Fainelli <florian@openwrt.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Matthieu CASTET <matthieu.castet@parrot.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Shmulik Ladkani <shmulik.ladkani@gmail.com>,
Wolfram Sang <w.sang@pengutronix.de>,
Chuanxiao Dong <chuanxiao.dong@intel.com>,
Joe Perches <joe@perches.com>,
Guillaume LECERF <glecerf@gmail.com>,
Roman Tereshonkov <roman.tereshonkov@nokia.com>
Subject: Re: [PATCH v3 3/6] mtd: nand: erase block before marking bad
Date: Sat, 14 Jan 2012 00:42:30 +0200 [thread overview]
Message-ID: <1326494553.2258.38.camel@koala> (raw)
In-Reply-To: <1326140612-26323-4-git-send-email-computersforpeace@gmail.com>
On Mon, 2012-01-09 at 12:23 -0800, Brian Norris wrote:
> Many NAND flash systems (especially those with MLC NAND) cannot be
> reliably written twice in a row. For instance, when marking a bad block,
> the block may already have data written to it, and so we should attempt
> to erase the block before writing a bad block marker to its OOB region.
>
> We can ignore erase failures, since the block may be bad such that it
> cannot be erased properly; we still attempt to write zeros to its spare
> area.
>
> Note that the erase must be performed before the BBT is updated, since
> otherwise, nand_erase_nand() would not allow us to erase our "bad
> block."
>
> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This looks like an independent patch to me, is that right? If yes, you
can send it separately.
Artem.
next prev parent reply other threads:[~2012-01-13 22:42 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-09 20:23 [PATCH v3 0/6] NAND BBM + BBT updates Brian Norris
2012-01-09 20:23 ` [PATCH v3 1/6] mtd: nand: add NAND_NO_WRITE_OOB option Brian Norris
2012-01-09 20:23 ` [PATCH v3 2/6] mtd: nand: write bad block marker by default even with BBT Brian Norris
2012-01-09 20:23 ` [PATCH v3 3/6] mtd: nand: erase block before marking bad Brian Norris
2012-01-13 22:42 ` Artem Bityutskiy [this message]
2012-01-13 23:07 ` Brian Norris
2012-01-09 20:23 ` [PATCH v3 4/6] mtd: nand: fix SCAN2NDPAGE check for BBM Brian Norris
2012-01-09 20:23 ` [PATCH v3 5/6] mtd: nand: differentiate 1- vs. 2-byte writes when marking bad blocks Brian Norris
2012-01-09 20:23 ` [PATCH v3 6/6] mtd: nand: correct comment on nand_chip badblockbits Brian Norris
2012-01-10 9:44 ` [PATCH v3 0/6] NAND BBM + BBT updates Sebastian Andrzej Siewior
2012-01-10 18:54 ` Brian Norris
2012-01-11 22:28 ` Artem Bityutskiy
2012-01-12 7:58 ` Shmulik Ladkani
2012-01-13 22:12 ` Artem Bityutskiy
2012-01-16 19:35 ` Shmulik Ladkani
2012-01-12 9:09 ` Sebastian Andrzej Siewior
2012-01-13 22:36 ` Artem Bityutskiy
2012-01-16 20:59 ` Woodhouse, David
2012-01-17 8:23 ` Artem Bityutskiy
2012-01-17 8:27 ` Artem Bityutskiy
2012-01-17 11:19 ` Angus CLARK
2012-01-17 13:06 ` Ivan Djelic
2012-01-18 22:18 ` Brian Norris
2012-01-17 10:22 ` Angus CLARK
2012-01-17 13:33 ` Artem Bityutskiy
2012-01-18 22:04 ` Brian Norris
2012-01-19 9:30 ` Angus CLARK
2012-01-19 9:59 ` Ricard Wanderlof
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