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From:   Alex Shi <alex.shi@linux.alibaba.com>
To:     akpm@linux-foundation.org, mgorman@techsingularity.net,
        tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru,
        daniel.m.jordan@oracle.com, yang.shi@linux.alibaba.com,
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        linux-mm@kvack.org, linux-kernel@vger.kernel.org,
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        iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com
Cc:     Alex Shi <alex.shi@linux.alibaba.com>
Subject: [PATCH v11 15/16] mm/pgdat: remove pgdat lru_lock
Date:   Thu, 28 May 2020 19:00:57 +0800
Message-Id: <1590663658-184131-16-git-send-email-alex.shi@linux.alibaba.com>
In-Reply-To: <1590663658-184131-1-git-send-email-alex.shi@linux.alibaba.com>
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Now pgdat.lru_lock was replaced by lruvec lock. It's not used anymore.

Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Cc: cgroups@vger.kernel.org
---
 include/linux/mmzone.h | 1 -
 mm/page_alloc.c        | 1 -
 2 files changed, 2 deletions(-)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index d70a12214936..42e646f7f30d 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -733,7 +733,6 @@ struct deferred_split {
 
 	/* Write-intensive fields used by page reclaim */
 	ZONE_PADDING(_pad1_)
-	spinlock_t		lru_lock;
 
 #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
 	/*
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 79a3a6d62532..30081dc0cc15 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6765,7 +6765,6 @@ static void __meminit pgdat_init_internals(struct pglist_data *pgdat)
 	init_waitqueue_head(&pgdat->pfmemalloc_wait);
 
 	pgdat_page_ext_init(pgdat);
-	spin_lock_init(&pgdat->lru_lock);
 	lruvec_init(&pgdat->__lruvec);
 }
 
-- 
1.8.3.1