Re: Discard support (was Re: [PATCH] swap: send callback when swap slot is freed)

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On Mon, 2009-08-17 at 15:12 -0400, Christoph Hellwig wrote:
> On Mon, Aug 17, 2009 at 08:10:38AM -0600, Matthew Wilcox wrote:
> > On Mon, Aug 17, 2009 at 08:56:12AM -0500, James Bottomley wrote:
> > > The testing was initially done to see if the initial maximal discard
> > > proposal from LSF09 was a viable approach (which it wasn't given the
> > > time taken to UNMAP).
> > 
> > It would be nice if that feedback could be made public instead of it
> > leaking out in dribs and drabs like this.
> 
> Yeah, I don't remember hearing about anything like this either.

Well you were both in #storage when it got discussed on 4 May.  However,
I'm hopeful that the array vendors will make a more direct statement of
the capabilities shortly.

James


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