On Mon, Jun 12, 2023 at 08:51:02PM +0800, Peng Zhang wrote:
> From: ZhangPeng <zhangpeng362@xxxxxxxxxx>
>
> Let's use the helper macro for_each_zone to iterate over all memory
> zones and reset the node managed pages. After that, we can remove the
> unused function reset_node_managed_pages.
Are you sure it's safe to use for_each_zone() in all users of
reset_all_zones_managed_pages()?
> Signed-off-by: ZhangPeng <zhangpeng362@xxxxxxxxxx>
> ---
> mm/memblock.c | 14 +++-----------
> 1 file changed, 3 insertions(+), 11 deletions(-)
>
> diff --git a/mm/memblock.c b/mm/memblock.c
> index da4264528e1e..af552604c3fb 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -2122,23 +2122,15 @@ static unsigned long __init free_low_memory_core_early(void)
>
> static int reset_managed_pages_done __initdata;
>
> -static void __init reset_node_managed_pages(pg_data_t *pgdat)
> -{
> - struct zone *z;
> -
> - for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++)
> - atomic_long_set(&z->managed_pages, 0);
> -}
> -
> void __init reset_all_zones_managed_pages(void)
> {
> - struct pglist_data *pgdat;
> + struct zone *z;
>
> if (reset_managed_pages_done)
> return;
>
> - for_each_online_pgdat(pgdat)
> - reset_node_managed_pages(pgdat);
> + for_each_zone(z)
> + atomic_long_set(&z->managed_pages, 0);
>
> reset_managed_pages_done = 1;
> }
> --
> 2.25.1
>
--
Sincerely yours,
Mike.
