Re: [linus:master] [mm] efa7df3e3b: kernel_BUG_at_include/linux/page_ref.h

[David Hildenbrand]

On 25.06.24 22:34, Yang Shi wrote:
> On Tue, Jun 11, 2024 at 11:01 PM Oliver Sang <oliver.sang@xxxxxxxxx> wrote:
> > hi, Yang Shi,
> >
> > On Wed, Jun 05, 2024 at 08:44:37PM -0700, Yang Shi wrote:
> > > Oliver Sang <oliver.sang@xxxxxxxxx>于2024年6月5日 周三19:16写道：
> > >
> > > > hi, Yang Shi,
> > > >
> > > > On Tue, Jun 04, 2024 at 04:53:56PM -0700, Yang Shi wrote:
> > > > > On Mon, Jun 3, 2024 at 9:54 AM Yang Shi <shy828301@xxxxxxxxx> wrote:
> > > > > > On Mon, Jun 3, 2024 at 7:02 AM Oliver Sang <oliver.sang@xxxxxxxxx>
> > > > wrote:
> > > > > > > hi, Yang Shi,
> > > > > > >
> > > > > > > On Fri, May 31, 2024 at 01:57:06PM -0700, Yang Shi wrote:
> > > > > > > > Hi Oliver,
> > > > > > > >
> > > > > > > > I just came up with a quick patch (just build test) per the
> > > > discussion
> > > > > > > > and attached, can you please to give it a try? Once it is
> > > > verified, I
> > > > > > > > will refine the patch and submit for review.
> > > > > > >
> > > > > > > what's the base of this patch? I tried to apply it upon efa7df3e3b or
> > > > > > > v6.10-rc2. both failed.
> > > > > >
> > > > > > Its base is mm-unstable. The head commit is 8e06d6b9274d ("mm: add
> > > > > > swappiness= arg to memory.reclaim"). Sorry for the confusion, I should
> > > > > > have mentioned this.
> > > > >
> > > > > I just figured out a bug in the patch. Anyway, we are going to take a
> > > > > different approach to fix the issue per the discussion. I already sent
> > > > > the series to the mailing list. Please refer to
> > > > https://lore.kernel.org/linux-mm/20240604234858.948986-1-yang@xxxxxxxxxxxxxxxxxxxxxx/
> > > >
> > > > got it. seems you will submit v2? should we wait v2 to do the tests?
> > >
> > >
> > > The real fix is patch #1, that doesn’t need v2. So you just need to test
> > > that.
> >
> > we've finished tests and confirmed patch #1 fixed the issue.
> > we also tested upon patch #2, still clean.
>
> Thanks for testing. Sorry for the late reply, just came back from
> vacation. It seems like Andrew didn't take the fix yet. I will resend
> the patch with your tested-by tag. And I will drop the patch #2 since
> it is just a clean up and I didn't receive any review comments. In
> addition, the undergoing hugepd clean up may make this clean up
> easier, so I will put the clean up on the back burner for now.

Sorry, was expecting a v2 of the second patch. But agreed that posting 
the second patch separately is reasonable -- possibly after the hugepd 
stuff is gone for good.

--
Cheers,

David / dhildenb