[RFC] Volatile data device vor jffs2

[Jörn Engel]

On Wed, 4 August 2004 09:55:41 +0100, Dermot McGahon wrote:
> 
> >Comments?
> 
> Well, it still needs to be flushed to something non-volatile at
> some point.

With a DRAM based device, yes.

> You can vary the time between flushes. It depends on how valuable
> that data is to you. With an approach such as this you are really
> deciding how big of a window for data loss you are willing to put
> up with.
> 
> The approach I took while doing this a couple of years ago was not
> to erase blocks until absolutely necessary and then do all the
> garbage collection/file system reorganisation once. This took time
> to do though, was suitable for the device in question (a KVM), but
> possibly not for a general filesystem.

That can be moved to a different thread, as already the case.  Except
for high-throughput write situations, it should be unnoticed by the
user.

Jörn

-- 
The grand essentials of happiness are: something to do, something to
love, and something to hope for.
-- Allan K. Chalmers