Limited support of NAND features in MTD.
dedekind at infradead.org
Wed Dec 19 06:57:23 EST 2007
On Wed, 2007-12-19 at 10:52 +0000, David Woodhouse wrote:
> On Wed, 2007-12-19 at 10:49 +0000, Alexey Korolev wrote:
> > Hmm I did not heard about this. Could you please give more details on
> > how partial page read can suffer from lack of ECC?
> If your ECC covers the whole page, you have to read the whole page in
> order to check ECC.
> Of course, if you do ECC in sub-pages in the first place, you can read
> only a single ECC block. But you still can't just read arbitrary byte
Sure, but as the guys showed, even this gives substantial JFFS2
performance growth. Providing their figures are correct, subpage reads
are more then worth using.
Artem Bityutskiy (Битюцкий Артём)
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