Re: seastar temporary_buffer/packet and ceph::buffer

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On Tue, Jan 16, 2018 at 01:09:57AM +0800, kefu chai wrote:
> On Tue, Jan 16, 2018 at 1:04 AM, Piotr Dałek <branch@xxxxxxxxxxxxxxxx> wrote:
> > On Tue, Jan 16, 2018 at 12:53:22AM +0800, kefu chai wrote:
> >> On Mon, Jan 15, 2018 at 11:49 PM, kefu chai <tchaikov@xxxxxxxxx> wrote:
> >> > [..]
> >> > i am preparing a change to prototype this approach. the downside of it is:
> >> >
> >> > - we need to include a placeholder structure in buffer.h for
> >> > seastar::tempoary_buffer<char>. and cast it to
> >> > seastar::tempoary_buffer<char> in buffer.cc . otherwise we need to
> >> > include seastar headers in librados.
> >>
> >> - we cannot store the crc map along with the raw class anymore. this
> >> might be a show stopper.
> >
> > https://github.com/ceph/ceph/pull/18906
> > There, already fixed it.
> 
> Piotr, thanks for point me to this PR. but i am evaluating the pros
> and cons of the change, which tries to replace buffer::raw with
> seastar::temporary_buffer, and use the latter in buffer::ptr as a
> member variable.

And I'm pointing out that there's no need to worry about crc map anymore,
because it's gone.

-- 
Piotr Dałek
branch@xxxxxxxxxxxxxxxx
http://blog.predictor.org.pl
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