On Fri, Jul 11, 2025 at 09:17:27AM +0100, Mark Brown wrote:
> On Mon, Jul 07, 2025 at 06:27:52AM +0100, Lorenzo Stoakes wrote:
> > Historically we've made it a uAPI requirement that mremap() may only
> > operate on a single VMA at a time.
> >
> > For instances where VMAs need to be resized, this makes sense, as it
> > becomes very difficult to determine what a user actually wants should they
> > indicate a desire to expand or shrink the size of multiple VMAs (truncate?
> > Adjust sizes individually? Some other strategy?).
>
> I'm seeing failures in the mremap_dontunmap test in -next on Rasperry Pi
> 4 which bisect down to this patch. The test logging isn't super helpful
> here sadly:
Same thing on Orion O6 (a more modern ARM v9 system with more RAM than
my Pi):
https://lava.sirena.org.uk/scheduler/job/1556807
and Avenger 96 (which is 32 bit arm):
https://lava.sirena.org.uk/scheduler/job/1556479
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