From: "Artem B. Bityutskiy" <dedekind@yandex.ru>
To: Ferenc Havasi <havasi@inf.u-szeged.hu>
Cc: linux-mtd@lists.infradead.org, "Zhao, Forrest" <forrest.zhao@intel.com>
Subject: Re: The problem that I didn't think out
Date: Mon, 28 Nov 2005 13:15:27 +0300 [thread overview]
Message-ID: <438AD8BF.8020905@yandex.ru> (raw)
In-Reply-To: <438A5023.4040503@inf.u-szeged.hu>
Ferenc Havasi wrote:
> Be that as it may I have a NAND question, I think you know the answer
> (NAND Guru Artem :) ):
> - if there is and erase block aready fulled, is there any possibility to
> mark its pages as obsolated (individually)? Is it allowed to write to
> OOB (or data) area one more? (or write OOB later than the data... or
> similar trick?)
Yes, but this depends on NAND type. In the worst case, you may write at
least once there. In case of some NANDs - more.
Note, JFFS2 writes clean marker to OOB area of the first page of a newly
erased eraseblock. But it doesn't prohibit JFFS2 to write to this page
later, and store ECC in OOB, even though this OOB already contains some
data (the clean marker).
--
Best Regards,
Artem B. Bityutskiy,
St.-Petersburg, Russia.
next prev parent reply other threads:[~2005-11-28 10:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-25 8:36 The problem that I didn't think out Zhao, Forrest
2005-11-25 11:58 ` Artem B. Bityutskiy
2005-11-27 13:01 ` Ferenc Havasi
2005-11-27 13:20 ` Artem B. Bityutskiy
2005-11-28 0:32 ` Ferenc Havasi
2005-11-28 10:15 ` Artem B. Bityutskiy [this message]
2005-11-28 2:20 ` zhao, forrest
2005-11-28 10:24 ` Artem B. Bityutskiy
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