Re: [syzbot] [mm?] BUG: Bad page map (7)

From: Matthew Wilcox
Date: Tue Sep 19 2023 - 21:54:15 EST


On Wed, Sep 20, 2023 at 09:29:18AM +0800, Yin Fengwei wrote:
>
>
> On 9/20/23 00:11, Dave Hansen wrote:
> > On 9/18/23 18:11, Yin Fengwei wrote:
> >>> I will find a test machine to measure the performance difference of these two
> >>> versions by using xfs + will-it-scale. Will keep you guys updated.
> >> I'd like to move this bug fixing forward. Based on the test result here:
> >> https://lore.kernel.org/linux-mm/124631ab-eb4c-6584-12d4-f3c91e69c873@xxxxxxxxx/
> >> There is very small performance delta between your version and Dave's.
> >>
> >> What do you think if we propose to merge Dave's version? Or do I need collect
> >> more data? Thanks.
> >
> > I honestly don't feel that strongly about my version versus Matthew's.
> > I like mine, but I'll happily ack either approach.
> >
> > The thing I care about the most is getting the bug fixed ... quickly. :)
> Same in my side.

I'm just redoing the commit message now.