[PATCH v2 8/8] mm: vmscan: remove noinline_for_stack

From: Muchun Song
Date: Fri Apr 16 2021 - 01:16:22 EST

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 2bc5cf409958..2d2727b78df9 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2014,8 +2014,8 @@ 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;
@@ -2095,7 +2095,7 @@ 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)