Re: some questions regarding the write operation on JFFS2

[Vahid Fereydunkolahi <fereydunk@yahoo.com>]

--- "Artem B. Bityuckiy" <dedekind@infradead.org>
wrote:

> On Tue, 18 Jan 2005, Vahid Fereydunkolahi wrote:
> 
> > Hi All,
> >  I traced the write operation from the Linux
> kernel to
> > the JFFS2. I have some questions:
> >     1) Is there any chance that there could be
> some
> > partial writes on the NAND flash (if power failure
> > happens during write operation).
> Yes, there is chance.

Does JFFS2 guarantee that if there is a partial write
then the data will be ignored? 

> 
> > 
> >     2) Does SYNC has any meaning when using the
> JFFS2.
> > As fas as I noticed the write operations are
> > forwarded to the MTD device, and they are not
> cached.
> For NAND JFFS2 has per-NAND page buffer, so sync
> flushes it. see 
> jffs2/wbuf.c.
> 
> > 
> > Thank you so much in advance,
> > --vahid
> You're welcome :-)
> 
> > 
> > 
> > 		
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> 
> --
> Best Regards,
> Artem B. Bityuckiy,
> St.-Petersburg, Russia.
> 



		
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