Re: [PATCH] mm: memcontrol.c: Cleaning up function that are not used anywhere

[Michal Hocko]

On Wed 03-12-14 10:22:31, Johannes Weiner wrote:
> On Tue, Dec 02, 2014 at 11:41:23PM +0100, Rickard Strandqvist wrote:
> > Remove function mem_cgroup_lru_names_not_uptodate() that is not used anywhere.
> > 
> > This was partially found by using a static code analysis program called cppcheck.
> > 
> > Signed-off-by: Rickard Strandqvist <rickard_strandqvist@xxxxxxxxxxxxxxxxxx>
> > ---
> >  mm/memcontrol.c |    5 -----
> >  1 file changed, 5 deletions(-)
> > 
> > diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> > index d6ac0e3..5edd1fe 100644
> > --- a/mm/memcontrol.c
> > +++ b/mm/memcontrol.c
> > @@ -4379,11 +4379,6 @@ static int memcg_numa_stat_show(struct seq_file *m, void *v)
> >  }
> >  #endif /* CONFIG_NUMA */
> >  
> > -static inline void mem_cgroup_lru_names_not_uptodate(void)
> > -{
> > -	BUILD_BUG_ON(ARRAY_SIZE(mem_cgroup_lru_names) != NR_LRU_LISTS);
> > -}
> 
> That assertion doesn't work in an unused function, but we still want
> this check.  Please move the BUILD_BUG_ON() to the beginning of
> memcg_stat_show() instead.

Ohh. I have completely missed the point of the check! Moving the check
to memcg_stat_show sounds like a good idea.

-- 
Michal Hocko
SUSE Labs
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