On Sat 22-08-15 15:40:10, Yaowei Bai wrote:
> The comment says that the per-cpu batchsize and zone watermarks
> are determined by present_pages which is definitely wrong, they
> are both calculated from managed_pages. Fix it.
This seems to be missed in b40da04946aa ("mm: use zone->present_pages
instead of zone->managed_pages where appropriate")
>
> Signed-off-by: Yaowei Bai <bywxiaobai@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
> ---
> mm/page_alloc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 5b5240b..c22b133 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6003,7 +6003,7 @@ void __init mem_init_print_info(const char *str)
> * set_dma_reserve - set the specified number of pages reserved in the first zone
> * @new_dma_reserve: The number of pages to mark reserved
> *
> - * The per-cpu batchsize and zone watermarks are determined by present_pages.
> + * The per-cpu batchsize and zone watermarks are determined by managed_pages.
> * In the DMA zone, a significant percentage may be consumed by kernel image
> * and other unfreeable allocations which can skew the watermarks badly. This
> * function may optionally be used to account for unfreeable pages in the
> --
> 1.9.1
>
>
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--
Michal Hocko
SUSE Labs
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