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From: Jarkko Lavinen <jarkko.lavinen@nokia.com>
To: Artem Bityutskiy <dedekind1@gmail.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: [PATCH 3/3] mtd: Add mtdswap block driver
Date: Tue, 22 Feb 2011 18:21:43 +0200	[thread overview]
Message-ID: <20110222162143.GA13529@angel.research.nokia.com> (raw)
In-Reply-To: <1298038470.5623.50.camel@localhost>

On Fri, Feb 18, 2011 at 04:14:30PM +0200, ext Artem Bityutskiy wrote:
> ... what's the problem with re-trying the erase operation - it
> looks like over-design.

> Is it please possible to remove this config option?

I have a Hynix SLC OneNand spec which says an erase block with an
erase failure or a write error should not be re-written or erased
again but instead just garbage collected and marked bad.

If I switch permanently to the strict erase failure handling, bad
block marking could be too sensitive for some devices expecting
retries.

If I switch permanently to the lenient mode, mtdswap would retry
failed erases which would be against chip spec of at least the one
OneNand chip I am working with.

If I remove the config option it would then mean strict handling
only.

Jarkko

  reply	other threads:[~2011-02-22 16:21 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-14 14:16 Jarkko Lavinen
2011-02-14 14:16 ` [PATCH 1/3] mtd_blkdevs: Add background processing support Jarkko Lavinen
2011-02-14 14:16 ` [PATCH 2/3] mtd_blkdevs: Set the maximum discards size Jarkko Lavinen
2011-02-14 14:16 ` [PATCH 3/3] mtd: Add mtdswap block driver Jarkko Lavinen
2011-02-18 14:14   ` Artem Bityutskiy
2011-02-22 16:21     ` Jarkko Lavinen [this message]
2011-02-25 11:03       ` Artem Bityutskiy
2011-03-09  8:08         ` Artem Bityutskiy

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