Re: [EXT] [PATCH v2 3/3] mtd: rawnand: micron: Address the shallow erase issue

[Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>]

On Wed, 6 May 2020 21:23:18 +0200 (CEST)
Richard Weinberger <richard@xxxxxx> wrote:

> ----- Ursprüngliche Mail -----
> > Von: "Boris Brezillon" <boris.brezillon@xxxxxxxxxxxxx>
> > An: "richard" <richard@xxxxxx>
> > CC: "Bean Huo, beanhuo" <beanhuo@xxxxxxxxxx>, "Miquel Raynal" <miquel.raynal@xxxxxxxxxxx>, "Vignesh Raghavendra"
> > <vigneshr@xxxxxx>, "Tudor Ambarus" <Tudor.Ambarus@xxxxxxxxxxxxx>, "linux-mtd" <linux-mtd@xxxxxxxxxxxxxxxxxxx>, "Steve
> > deRosier" <derosier@xxxxxxxxx>, "Thomas Petazzoni" <thomas.petazzoni@xxxxxxxxxxx>, "tglx" <tglx@xxxxxxxxxxxxx>, "Zoltan
> > Szubbocsev, zszubbocsev" <zszubbocsev@xxxxxxxxxx>, "Piotr Wojtaszczyk" <WojtaszczykP@xxxxxxxxxxxxxxxxxx>
> > Gesendet: Mittwoch, 6. Mai 2020 21:01:58
> > Betreff: Re: [EXT] [PATCH v2 3/3] mtd: rawnand: micron: Address the shallow erase issue  
> 
> > On Wed, 6 May 2020 20:44:29 +0200 (CEST)
> > Richard Weinberger <richard@xxxxxx> wrote:
> >   
> >> Bean, Boris,
> >> 
> >> ----- Ursprüngliche Mail -----  
> >> >> > Concerning this, I still have question, for the UBIFS,  If I am
> >> >> > correct, there are EC and VID header both being damaged, then UBIFS
> >> >> > will re-erase it. I don't know if UBIFS can handle there is dirty/filling data
> >> >> > in the  
> >> >> some pages  and EC/VID valid.  
> >> 
> >> Uhh. Damaging just payload asks for trouble.  
> > 
> > I'd expect UBI to just mark the LEB as bad and schedule it for erasure
> > (again, pretty similar to an interrupted erase).  
> 
> UBI scans only headers during attach. If you don't touch these, no way.

Sorry, I misunderstood what you meant by payload. UBI should schedule
the PEB for erase if the EC/VID header is corrupted.


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