Re: [dm-devel] [PATCH v10 2/7] fs: crypto: invoke crypto API for ESSIV handling

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On Tue, 13 Aug 2019 at 21:00, Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
>
> On Tue, Aug 13, 2019 at 08:09:41AM +0300, Ard Biesheuvel wrote:
> > On Mon, 12 Aug 2019 at 22:47, Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
> > >
> > > On Mon, Aug 12, 2019 at 05:53:19PM +0300, Ard Biesheuvel wrote:
> > > > Instead of open coding the calculations for ESSIV handling, use a
> > > > ESSIV skcipher which does all of this under the hood.
> > > >
> > > > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
> > >
> > > This looks fine (except for one comment below), but this heavily conflicts with
> > > the fscrypt patches planned for v5.4.  So I suggest moving this to the end of
> > > the series and having Herbert take only 1-6, and I'll apply this one to the
> > > fscrypt tree later.
> > >
> >
> > I think the same applies to dm-crypt: at least patch #7 cannot be
> > applied until my eboiv patch is applied there as well, but [Milan
> > should confirm] I'd expect them to prefer taking those patches via the
> > dm tree anyway.
> >
> > Herbert, what would you prefer:
> > - taking a pull request from a [signed] tag based on v4.3-rc1 that
> > contains patches #1, #4, #5 and #6, allowing Eric and Milan/Mike to
> > merge it as well, and apply the respective fscrypt and dm-crypt
> > changes on top
> > - just take patches #1, #4, #5 and #6 as usual, and let the fscrypt
> > and dm-crypt changes be reposted to the respective lists during the
> > next cycle
> >
>
> FWIW I'd much prefer the second option, to minimize the number of special things
> that Linus will have to consider or deal with.  (There's also going to be a
> conflict between the fscrypt and keyrings trees.)  I'd be glad to take the
> fscrypt patch for 5.5, if the essiv template is added in 5.4.
>

Works for me. I'll respin with the dm-crypt and fscrypt patches
omitted (and the minor fixes you suggested applied).



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