Re: [PATCH -next] mm: Mark 'stack_vm_area' with __maybe_unused

[Michal Hocko]

On Wed 02-01-19 19:40:15, YueHaibing wrote:
> On 2019/1/2 18:55, Dan Carpenter wrote:
> > On Fri, Dec 28, 2018 at 09:58:04AM +0100, Michal Hocko wrote:
> >> On Fri 28-12-18 02:46:30, YueHaibing wrote:
> >>> Fixes gcc '-Wunused-but-set-variable' warning when
> >>> CONFIG_VMAP_STACK is not set:
> >>
> >> Isn't this warning disabled? I can see the following
> >> # These warnings generated too much noise in a regular build.
> >> # Use make W=1 to enable them (see scripts/Makefile.extrawarn)
> >> KBUILD_CFLAGS += -Wno-unused-but-set-variable
> >>
> >> in the main makefile. IMHO this warning doesn't really give us much.
> >>
> > 
> > It would be nice to enable that warning.  YueHaibing and Colin King have
> > been whittling away at the problematic code...
> > 
> > YueHaibing, how many of these warnings do we have remaining on an
> > allmodoconfig?
> 
> about 1300+

This is way too much. Is any of them actually pointing to a real bug?

-- 
Michal Hocko
SUSE Labs