linux-kernel - [PATCH 08/14] lru/swap: uer lruvec lock in activate

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Message-Id: <1566294517-86418-9-git-send-email-alex.shi@linux.alibaba.com>
Date:   Tue, 20 Aug 2019 17:48:31 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Tejun Heo <tj@...nel.org>
Cc:     Alex Shi <alex.shi@...ux.alibaba.com>,
        Michal Hocko <mhocko@...e.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Matthew Wilcox <willy@...radead.org>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Peng Fan <peng.fan@....com>,
        Nikolay Borisov <nborisov@...e.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>
Subject: [PATCH 08/14] lru/swap: uer lruvec lock in activate_page

to replace pgdat lru_lock.

Signed-off-by: Alex Shi <alex.shi@...ux.alibaba.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Michal Hocko <mhocko@...e.com>
Cc: Vlastimil Babka <vbabka@...e.cz>
Cc: Jason Gunthorpe <jgg@...pe.ca>
Cc: Matthew Wilcox <willy@...radead.org>
Cc: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Cc: Peng Fan <peng.fan@....com>
Cc: Nikolay Borisov <nborisov@...e.com>
Cc: Ira Weiny <ira.weiny@...el.com>
Cc: Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc: cgroups@...r.kernel.org
Cc: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org
---
 mm/swap.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/mm/swap.c b/mm/swap.c
index 2a8fe6df08fc..d2dad08fcfd0 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -325,11 +325,14 @@ static inline void activate_page_drain(int cpu)
 void activate_page(struct page *page)
 {
 	pg_data_t *pgdat = page_pgdat(page);
+	struct lruvec *lruvec;
 
 	page = compound_head(page);
-	spin_lock_irq(&pgdat->lruvec.lru_lock);
+	lruvec = mem_cgroup_page_lruvec(page, pgdat);
+	spin_lock_irq(&lruvec->lru_lock);
+	sync_lruvec_pgdat(lruvec, pgdat);
 	__activate_page(page, mem_cgroup_page_lruvec(page, pgdat), NULL);
-	spin_unlock_irq(&pgdat->lruvec.lru_lock);
+	spin_unlock_irq(&lruvec->lru_lock);
 }
 #endif
 
-- 
1.8.3.1