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List:       yaffs
Subject:    Re: [Yaffs] How to handle file management if spare area and main area
From:       zhy78 <zhy.sh.cn () gmail ! com>
Date:       2005-08-04 4:37:10
Message-ID: 2f5a7eb205080321373deab1da () mail ! gmail ! com
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Thanks, Charles,


On 8/4/05, Charles Manning <manningc2@actrix.gen.nz> wrote:
> On Wednesday 03 August 2005 18:08, zhy78 wrote:
> > Hi, YAFFS guys,
> >
> > MLC NAND doesn't allow consecutive partial program in main area and
> > spare area. So how to mark an invalid data?
> 
> YAFFS1 does do overwriting for one purpose only: marking invalid chunks.
> 
> YAFFS2 does not do any overwriting. MLC was one of the reasons for this.
> 
> 
> Will YAFFS1 work with MLC? Perhaps. If the corruption is limited to the page
> that is marked invalid, then it does not really matter since the data is no
> longer of interest anyway. The only caveat to this would be if it hammers the
> bits that make it look like a bad block.
> 
> 
> -- Charles
>


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