linux-kernel - Re: determining if a block erasure failed

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Date:	Tue, 15 May 2012 15:22:48 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Joel Reardon <joel@...mbassador.com>
Cc:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: determining if a block erasure failed

On Tue, 2012-05-15 at 13:56 +0200, Joel Reardon wrote:
> Ah yes, if wl_wrk is freed in schedule_erase, theres no way to pass it
> back that way.
> 
> The reason is that, if erasing a block of keys fails, then those keys may
> remain on the flash device for eternity. While a rare occurance, it may be
> nice to have ubifs perform GC on all main LEBs storing the data nodes that
> can no longer be deleted through key erasure / reencrypt the valid data
> nodes.

Erasure is asynchronous and I do not see an good way to implement your
idea. Do you have a good plan?

-- 
Best Regards,
Artem Bityutskiy

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