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SubjectRe: what the patches do Re: [RFC 10/15] PM / Hibernate: user, implement user_ops reader
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On Thursday 25 March 2010, Nigel Cunningham wrote:
> Hi.
>
> On 26/03/10 07:29, Rafael J. Wysocki wrote:
> > On Thursday 25 March 2010, Nigel Cunningham wrote:
> >> Hi.
> >>
> >> On 26/03/10 07:14, Rafael J. Wysocki wrote:
> >>> On Thursday 25 March 2010, Nigel Cunningham wrote:
> >>>> Hi.
> >>>>
> >>>> On 25/03/10 16:30, Pavel Machek wrote:
> >>>> [...]
> >>>>
> >>>>> I have some problems with sws_module_ops interface (handcoded locking
> >>>>> is too ugly to live), but it is better than I expected. But there may
> >>>>> be better solution available, one that does not need two interfaces to
> >>>>> maintain (we can't really get rid of userland interface). What about
> >>>>> this?
> >>>>
> >>>> Just picking up on that bracketed part: Can we flag the userland
> >>>> interface (and uswsusp) as being planned for eventual removal now... or
> >>>> at least agree to work toward that?
> >>>
> >>> No, we can't.
> >>>
> >>>> I'm asking because if we're going to make a go of getting the in-kernel
> >>>> code in much better shape, and we have Rafael, Jiri and I - and you? -
> >>>> all pulling in the same direction to improve it, there's going to come a
> >>>> point (hopefully not too far away) where uswsusp is just making life too
> >>>> difficult, and getting rid of it will be a big help.
> >>>
> >>> We're not dropping user space interfaces used by every distro I know of.
> >>
> >> So what's your long term plan then?
> >
> > First, improve the in-kernel thing, second, switch people to it, _then_ remove
> > the s2disk interface (after we're reasonably sure it's not used by any major
> > distro) and _finally_ simplify things after it's been removed.
> >
> > Does that sound reasonable?
>
> Well, that's pretty much what I was thinking too - improve then remove.
> I was just suggesting that we flag now that this is our plan, so it
> doesn't come as a surprise to anyone later and we can proceed more
> quickly than might otherwise be the case.

I think it's too early for that at this point.

Rafael


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