[PATCH][RFC] NAND subpage read feature. Take 2.

Alexander Belyakov abelyako at googlemail.com
Sun May 4 04:46:31 EDT 2008


On Fri, May 2, 2008 at 12:25 AM, Jörn Engel <joern at logfs.org> wrote:
> On Wed, 30 April 2008 13:13:24 +0100, Alexey Korolev wrote:
>>
>> This patch enables NAND subpage read functionality.
>
> ...and creates a peculiar conflict of interests in me.  I've added full
> caching of the complete mtd in logfs, which gave a huge speedup to some
> of my testcases.  However caching is done in page granularity, therefore
> it would completely defeat this patch, which also gives a speedup.
>

There is a special case for page aligned data where generic
read_page() is being used instead of read_subpage(). I believe logfs
caching won't suffer from this patch.

-a


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