On 07/20/2015 04:21 PM, Kirill A. Shutemov wrote:
> We're going to have THP mapped with PTEs. It will confuse numabalancing.
> Let's skip them for now.
Fair enough.
Acked-by: Jerome Marchand <jmarchan@xxxxxxxxxx>
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
> Tested-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
> Tested-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
> ---
> mm/memory.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/mm/memory.c b/mm/memory.c
> index 074edab89b52..52f6fa02c099 100644
> --- a/mm/memory.c
> +++ b/mm/memory.c
> @@ -3186,6 +3186,12 @@ static int do_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
> return 0;
> }
>
> + /* TODO: handle PTE-mapped THP */
> + if (PageCompound(page)) {
> + pte_unmap_unlock(ptep, ptl);
> + return 0;
> + }
> +
> /*
> * Avoid grouping on RO pages in general. RO pages shouldn't hurt as
> * much anyway since they can be in shared cache state. This misses
>
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