Re: Designing Another File System

[David Woodhouse]

On Tue, 2004-11-30 at 17:46 +0000, Alan Cox wrote:
> On Maw, 2004-11-30 at 18:28, Valdis.Kletnieks@xxxxxx wrote:
> > On Mon, 29 Nov 2004 23:32:05 EST, John Richard Moser said:
> > they punt on the issue of over-writing a sector that's been re-allocated by
> > the hardware (apparently the chances of critical secret data being left in
> > a reallocated block but still actually readable are "low enough" not to worry).
> 
> I guess they never consider CF cards which internally are log structured
> and for whom such erase operations are very close to pointless.

Actually for the cases where we do that translation layer in software
ourselves to emulate a block device, it would be really nice to know
that a sector is unused an hence that we no longer have to keep its old
stale contents when we garbage-collect.

-- 
dwmw2

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