RE: [PATCH 0/2] put_user_page*(): start converting the call sites

[David Laight]

From: John Hubbard
> Sent: 05 December 2018 01:06
> On 12/4/18 9:10 AM, David Laight wrote:
> > From: john.hubbard@xxxxxxxxx
> >> Sent: 04 December 2018 00:17
> >>
> >> Summary: I'd like these two patches to go into the next convenient cycle.
> >> I *think* that means 4.21.
> >>
> >> Details
> >>
> >> At the Linux Plumbers Conference, we talked about this approach [1], and
> >> the primary lingering concern was over performance. Tom Talpey helped me
> >> through a much more accurate run of the fio performance test, and now
> >> it's looking like an under 1% performance cost, to add and remove pages
> >> from the LRU (this is only paid when dealing with get_user_pages) [2]. So
> >> we should be fine to start converting call sites.
> >>
> >> This patchset gets the conversion started. Both patches already had a fair
> >> amount of review.
> >
> > Shouldn't the commit message contain actual details of the change?
> >
> 
> Hi David,
> 
> This "patch 0000" is not a commit message, as it never shows up in git log.
> Each of the follow-up patches does have details about the changes it makes.

I think you should still describe the change - at least in summary.

The patch I looked at didn't really...
IIRC it still referred to external links.

> But maybe you are really asking for more background information, which I
> should have added in this cover letter. Here's a start:
> 
> https://lore.kernel.org/r/20181110085041.10071-1-jhubbard@xxxxxxxxxx

Yes, but links go stale....

> ...and it looks like this small patch series is not going to work out--I'm
> going to have to fall back to another RFC spin. So I'll be sure to include
> you and everyone on that. Hope that helps.

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)