svn commit: r233073 - projects/nand/sys/geom

[Alexander Kabaev]

On Sat, 17 Mar 2012 12:37:20 -0700
Adrian Chadd <adrian at freebsd.org> wrote:

> Hiya,
> 
> If you're going to add new BIOs, can I possibly request we add a
> "BIO_WRITE" variant for NOR flash, that can be interpreted as "don't
> do a read-modify-write, but simply write over whatever the underlying
> storage device has" ?
> 
> That way NOR flash filesystems can do incremental writes of pages
> without having to do a read/erase/modify/write pass, where the erase
> is very very expensive.
> 
> Thanks,
> 
> 
> Adrian

You do not do that with NAND, not with any of the recent chips anyway,
unless you hate your data and want it dead :)

-- 
Alexander Kabaev
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