Hi Arnd,
On Tue, 2 Nov 2021 08:06:10 +0100 Arnd Bergmann <arnd@xxxxxxxx> wrote:
>
> On Tue, Nov 2, 2021 at 7:44 AM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> >
> > On Thu, 28 Oct 2021 23:38:44 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> > >
> > > On Thu, 28 Oct 2021 21:26:51 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> > > >
> > > > Today's linux-next build (powerpc allyesconfig) failed like this:
> > > >
> > > > fs/ntfs/aops.c: In function 'ntfs_write_mst_block':
> > > > fs/ntfs/aops.c:1311:1: error: the frame size of 2304 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
> > > > 1311 | }
> > > > | ^
> > > > cc1: all warnings being treated as errors
> > > >
> > > > I have no idea what has caused this.
> > >
> > > With a nudge from Arnd, it seems the immediate case was commit
> > >
> > > f22969a66041 ("powerpc/64s: Default to 64K pages for 64 bit book3s")
> > >
> > > from the powerpc tree switching the allyesconfig build from 4k pages to
> > > 64k pages which expanded a few arrays on the stack in that function.
> >
> > Can we do something about this, please?
>
> I submitted a workaround a while ago. Anton didn't like it, but has not
> come up with a proper fix in ntfs either:
>
> https://lore.kernel.org/lkml/20210927141815.1711736-1-arnd@xxxxxxxxxx/
>
> It does need to be changed a bit as I realized it depends on a rework of
> the Kconfig logic that I had in my randconfig build tree to have a common
> page size symbol across architectures. Without my other patch, it also
> needs to check for PPC_64K_PAGES.
>
> Should I send an updated version of the patch?
That would be good, thanks.
Even better would be to split up the function some how, but having had
a bit of a look at it, that may be a much longer job. I am assuming
that allocations (or their failure) are out of the question in that
particular function.
--
Cheers,
Stephen Rothwell
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