[dm-devel] [RFC 1/2] block: implement an unprep function corresponding directly to prep
Mike Snitzer
snitzer at redhat.com
Wed Jun 30 17:23:09 UTC 2010
On Wed, Jun 30 2010 at 1:01pm -0400,
James Bottomley <James.Bottomley at suse.de> wrote:
> So this is more directly what I'm thinking. It gives us an exactly
> correct place to hang the discard allocation in SCSI. The next patch
> shows a potential implementation in sd.
>
> I think it should avoid all the leaks people have been seeing trying to
> move the discard allocation/free into scsi. I also think it should
> facilitate sending discard through SCSI as a REQ_TYPE_FS.
Thanks james!
I'll look to take this template and layer in Christoph's approach to
pushing the page allocation down into SCSI.
I'll also look at Tomo's REQ_TYPE_FS changes for discard.
I'll report back as soon as I have something.
Mike
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