Re: Zeroing data blocks

From: Arjan van de Ven
Date: Sat Aug 05 2006 - 13:43:04 EST

On Sat, 2006-08-05 at 10:13 -0700, Avinash Ramanath wrote:
> Hi,
> I want to do this at the filesystem-level not in user-space.
> I have a stackable-filesystem that runs as a layer on top of the
> existing filesystem (with all the function pointers mapped to the
> corresponding base filesystem function pointers, and other suitable
> adjustments).
> So yes I have access to the filesystem.
> But the question is how can I access those particular data-blocks?

I think you misunderstood: You need to do this in the filesystem layer
that allocates and tracks the blocks. You really can't do it outside

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