linux-kernel - [PATCH v18 14/32] mm/lru: move lru_lock holding in func lru_note_cost

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Message-Id: <1598273705-69124-15-git-send-email-alex.shi@linux.alibaba.com>
Date:   Mon, 24 Aug 2020 20:54:47 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     akpm@...ux-foundation.org, mgorman@...hsingularity.net,
        tj@...nel.org, hughd@...gle.com, khlebnikov@...dex-team.ru,
        daniel.m.jordan@...cle.com, willy@...radead.org,
        hannes@...xchg.org, lkp@...el.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        shakeelb@...gle.com, iamjoonsoo.kim@....com,
        richard.weiyang@...il.com, kirill@...temov.name,
        alexander.duyck@...il.com, rong.a.chen@...el.com, mhocko@...e.com,
        vdavydov.dev@...il.com, shy828301@...il.com
Subject: [PATCH v18 14/32] mm/lru: move lru_lock holding in func lru_note_cost_page

It's a clean up patch w/o function changes.

Signed-off-by: Alex Shi <alex.shi@...ux.alibaba.com>
Reviewed-by: Alexander Duyck <alexander.h.duyck@...ux.intel.com>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org
---
 mm/swap.c       | 2 ++
 mm/workingset.c | 2 --
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/swap.c b/mm/swap.c
index 4eea95a4286f..906255db6006 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -298,8 +298,10 @@ void lru_note_cost(struct lruvec *lruvec, bool file, unsigned int nr_pages)
 
 void lru_note_cost_page(struct page *page)
 {
+	spin_lock_irq(&page_pgdat(page)->lru_lock);
 	lru_note_cost(mem_cgroup_page_lruvec(page, page_pgdat(page)),
 		      page_is_file_lru(page), thp_nr_pages(page));
+	spin_unlock_irq(&page_pgdat(page)->lru_lock);
 }
 
 static void __activate_page(struct page *page, struct lruvec *lruvec)
diff --git a/mm/workingset.c b/mm/workingset.c
index 92e66113a577..32e24cda1b4f 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -381,9 +381,7 @@ void workingset_refault(struct page *page, void *shadow)
 	if (workingset) {
 		SetPageWorkingset(page);
 		/* XXX: Move to lru_cache_add() when it supports new vs putback */
-		spin_lock_irq(&page_pgdat(page)->lru_lock);
 		lru_note_cost_page(page);
-		spin_unlock_irq(&page_pgdat(page)->lru_lock);
 		inc_lruvec_state(lruvec, WORKINGSET_RESTORE_BASE + file);
 	}
 out:
-- 
1.8.3.1