linux-kernel - [RFC PATCH 21/25] mm: move update_lru_sizes() to mm

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Date:   Wed,  3 Apr 2019 19:00:42 -0700
From:   Zi Yan <zi.yan@...t.com>
To:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Yang Shi <yang.shi@...ux.alibaba.com>,
        Keith Busch <keith.busch@...el.com>,
        Fengguang Wu <fengguang.wu@...el.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     Daniel Jordan <daniel.m.jordan@...cle.com>,
        Michal Hocko <mhocko@...nel.org>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Mel Gorman <mgorman@...hsingularity.net>,
        John Hubbard <jhubbard@...dia.com>,
        Mark Hairgrove <mhairgrove@...dia.com>,
        Nitin Gupta <nigupta@...dia.com>,
        Javier Cabezas <jcabezas@...dia.com>,
        David Nellans <dnellans@...dia.com>, Zi Yan <ziy@...dia.com>
Subject: [RFC PATCH 21/25] mm: move update_lru_sizes() to mm_inline.h for broader use.

From: Zi Yan <ziy@...dia.com>

Signed-off-by: Zi Yan <ziy@...dia.com>
---
 include/linux/mm_inline.h | 21 +++++++++++++++++++++
 mm/vmscan.c               | 25 ++-----------------------
 2 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 04ec454..b9fbd0b 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -44,6 +44,27 @@ static __always_inline void update_lru_size(struct lruvec *lruvec,
 #endif
 }
 
+/*
+ * Update LRU sizes after isolating pages. The LRU size updates must
+ * be complete before mem_cgroup_update_lru_size due to a santity check.
+ */
+static __always_inline void update_lru_sizes(struct lruvec *lruvec,
+			enum lru_list lru, unsigned long *nr_zone_taken)
+{
+	int zid;
+
+	for (zid = 0; zid < MAX_NR_ZONES; zid++) {
+		if (!nr_zone_taken[zid])
+			continue;
+
+		__update_lru_size(lruvec, lru, zid, -nr_zone_taken[zid]);
+#ifdef CONFIG_MEMCG
+		mem_cgroup_update_lru_size(lruvec, lru, zid, -nr_zone_taken[zid]);
+#endif
+	}
+
+}
+
 static __always_inline void add_page_to_lru_list(struct page *page,
 				struct lruvec *lruvec, enum lru_list lru)
 {
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a5ad0b3..1d539d6 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1593,27 +1593,6 @@ int __isolate_lru_page(struct page *page, isolate_mode_t mode)
 }
 
 
-/*
- * Update LRU sizes after isolating pages. The LRU size updates must
- * be complete before mem_cgroup_update_lru_size due to a santity check.
- */
-static __always_inline void update_lru_sizes(struct lruvec *lruvec,
-			enum lru_list lru, unsigned long *nr_zone_taken)
-{
-	int zid;
-
-	for (zid = 0; zid < MAX_NR_ZONES; zid++) {
-		if (!nr_zone_taken[zid])
-			continue;
-
-		__update_lru_size(lruvec, lru, zid, -nr_zone_taken[zid]);
-#ifdef CONFIG_MEMCG
-		mem_cgroup_update_lru_size(lruvec, lru, zid, -nr_zone_taken[zid]);
-#endif
-	}
-
-}
-
 /**
  * pgdat->lru_lock is heavily contended.  Some of the functions that
  * shrink the lists perform better by taking out a batch of pages
@@ -1804,7 +1783,7 @@ static int too_many_isolated(struct pglist_data *pgdat, int file,
 	return isolated > inactive;
 }
 
-static noinline_for_stack void
+noinline_for_stack void
 putback_inactive_pages(struct lruvec *lruvec, struct list_head *page_list)
 {
 	struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
@@ -2003,7 +1982,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
  * Returns the number of pages moved to the given lru.
  */
 
-static unsigned move_active_pages_to_lru(struct lruvec *lruvec,
+unsigned move_active_pages_to_lru(struct lruvec *lruvec,
 				     struct list_head *list,
 				     struct list_head *pages_to_free,
 				     enum lru_list lru)
-- 
2.7.4