On Tue, Nov 13, 2012 at 11:07:36AM +0100, Ingo Molnar wrote: > > * Mel Gorman <[email protected]> wrote: > > > From: Andrea Arcangeli <[email protected]> > > > > When scanning pmds, the pmd may be of numa type (_PAGE_PRESENT not set), > > however the pte might be present. Therefore, gup_pmd_range() must return > > 0 in this case to avoid losing a NUMA hinting page fault during gup_fast. > > > > Note: gup_fast will skip over non present ptes (like numa > > types), so no explicit check is needed for the pte_numa case. > > [...] > > So, why not fix all architectures that choose to expose > pte_numa() and pmd_numa() methods - via the patch below? >
I'll pick it up. Thanks. -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
