Re: + mm-fix-false-positive-warning-on-exit-due-mm_nr_pmdsmm.patch added to -mm tree

[Kirill A. Shutemov]

On Mon, Jan 26, 2015 at 12:04:11PM -0800, akpm@xxxxxxxxxxxxxxxxxxxx wrote:
> diff -puN arch/unicore32/mm/pgd.c~mm-fix-false-positive-warning-on-exit-due-mm_nr_pmdsmm arch/unicore32/mm/pgd.c
> --- a/arch/unicore32/mm/pgd.c~mm-fix-false-positive-warning-on-exit-due-mm_nr_pmdsmm
> +++ a/arch/unicore32/mm/pgd.c
> @@ -69,6 +69,7 @@ pgd_t *get_pgd_slow(struct mm_struct *mm
>  
>  no_pte:
>  	pmd_free(mm, new_pmd);
> +	mm_dec_nr_pmds(mm);
>  no_pmd:
>  	free_pages((unsigned long)new_pgd, 0);
>  no_pgd:
> @@ -96,7 +97,9 @@ void free_pgd_slow(struct mm_struct *mm,
>  	pte = pmd_pgtable(*pmd);
>  	pmd_clear(pmd);
>  	pte_free(mm, pte);
> +	atomic_long_dec(&mm->nr_ptes);
>  	pmd_free(mm, pmd);
> +	mm_dec_nr_pmds(mm)
>  free:
>  	free_pages((unsigned long) pgd, 0);
>  }