On Tue 13-04-21 14:51:53, Muchun Song wrote:
> The noinline_for_stack is introduced by commit 666356297ec4 ("vmscan:
> set up pagevec as late as possible in shrink_inactive_list()"), its
> purpose is to delay the allocation of pagevec as late as possible to
> save stack memory. But the commit 2bcf88796381 ("mm: take pagevecs off
> reclaim stack") replace pagevecs by lists of pages_to_free. So we do
> not need noinline_for_stack, just remove it (let the compiler decide
> whether to inline).
>
> Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
> Acked-by: Roman Gushchin <guro@xxxxxx>
> Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
> ---
> mm/vmscan.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index 64bf07cc20f2..e40b21298d77 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -2015,8 +2015,8 @@ static int too_many_isolated(struct pglist_data *pgdat, int file,
> *
> * Returns the number of pages moved to the given lruvec.
> */
> -static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec,
> - struct list_head *list)
> +static unsigned int move_pages_to_lru(struct lruvec *lruvec,
> + struct list_head *list)
> {
> int nr_pages, nr_moved = 0;
> LIST_HEAD(pages_to_free);
> @@ -2096,7 +2096,7 @@ static int current_may_throttle(void)
> * shrink_inactive_list() is a helper for shrink_node(). It returns the number
> * of reclaimed pages
> */
> -static noinline_for_stack unsigned long
> +static unsigned long
> shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
> struct scan_control *sc, enum lru_list lru)
> {
> --
> 2.11.0
--
Michal Hocko
SUSE Labs
