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

[Johannes Weiner]

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.
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