Re: [ANNOUNCE] JFFS2 support for NAND flash..

Congratulations and thanks a lot for all your effort! Does mtd-snapshot-20031008.tar.bz2 contains all thses?

Regards,
Kevin

----- Original Message ----- 
From: "David Woodhouse" <[email protected]>
To: <[email protected]>; <[email protected]>; <[email protected]>
Sent: Thursday, October 09, 2003 3:10 PM
Subject: [ANNOUNCE] JFFS2 support for NAND flash..


> I'm happy to announce that the JFFS2 support for NAND flash has finally
> reached a state in which it can be considered sane to use it in
> production.
> 
> Thanks to generous sponsorship from Texas Instruments, the final
> difficult parts of the NAND flash support have now been implemented.
> 
> Those were, for those who weren't paying attention, the details of
> flushing the write-behind buffer appropriately upon fsync(), sync() and
> other stimuli, and the code to deal with _failure_ to write the
> write-behind buffer -- recovering its contents and writing them out
> elsewhere on the flash to avoid data loss.
> 
> Other bugs were also found and fixed in the process of testing, and the
> CVS tree also now contains changes to the garbage-collector which affect
> the way it merges data nodes, which should significantly improve its
> progress. These should be of benefit even on NOR flash, and may well
> allow us to reduce the free-block thresholds which people keep
> complaining about.
> 
> While I'm fairly confident of the behaviour and it's been stress testing
> both with and without simulated errors on a DiskOnChip on my desk for
> the best part of a week now, it remains relatively new code and should
> therefore be treated with respect. You are advised to undertake your own
> testing under your own particular usage patterns.
> 
> In addition to Texas Instruments, who kindly paid Red Hat to lock me in
> a room for a few weeks with the JFFS2 code, some NAND flash and a vat of
> coffee, I should also mention the efforts of Thomas Gleixner, who has
> done a lot of work on JFFS2/NAND too, and also on the NAND hardware
> drivers themselves. Thanks, Thomas.
> 
> -- 
> dwmw2
> 
> 
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