This fixes the problem on my C8000. Tested-by: graham.gower@xxxxxxxxx On 13 March 2015 at 21:00, Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> wrote: > There's hack in pgd_alloc() on parisc to initialize one pmd, which is > not accounted. It leads to underflow on exit. > > Let's adjust nr_pmds on pgd_alloc() to get accounting correct. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > Cc: John David Anglin <dave.anglin@xxxxxxxx> > Cc: Aaro Koskinen <aaro.koskinen@xxxxxx> > Cc: Graham Gower <graham.gower@xxxxxxxxx> > Cc: Domenico Andreoli <cavokz@xxxxxxxxx> > --- > arch/parisc/include/asm/pgalloc.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/parisc/include/asm/pgalloc.h b/arch/parisc/include/asm/pgalloc.h > index 55ad8be9b7f3..068b2fb9a47c 100644 > --- a/arch/parisc/include/asm/pgalloc.h > +++ b/arch/parisc/include/asm/pgalloc.h > @@ -38,6 +38,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm) > /* The first pmd entry also is marked with _PAGE_GATEWAY as > * a signal that this pmd may not be freed */ > __pgd_val_set(*pgd, PxD_FLAG_ATTACHED); > + mm_inc_nr_pmds(mm); > #endif > } > return actual_pgd; > -- > 2.1.4 > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>