linux-kernel - [PATCH v2 5/8] mm/pgdat: remove pgdat lru

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Message-Id: <1573567588-47048-6-git-send-email-alex.shi@linux.alibaba.com>
Date:   Tue, 12 Nov 2019 22:06:25 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     alex.shi@...ux.alibaba.com, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        akpm@...ux-foundation.org, mgorman@...hsingularity.net,
        tj@...nel.org, hughd@...gle.com, khlebnikov@...dex-team.ru,
        daniel.m.jordan@...cle.com, yang.shi@...ux.alibaba.com
Cc:     Vlastimil Babka <vbabka@...e.cz>,
        Dan Williams <dan.j.williams@...el.com>,
        Michal Hocko <mhocko@...e.com>,
        Wei Yang <richard.weiyang@...il.com>,
        Arun KS <arunks@...eaurora.org>,
        Oscar Salvador <osalvador@...e.de>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Alexander Potapenko <glider@...gle.com>,
        Johannes Weiner <hannes@...xchg.org>
Subject: [PATCH v2 5/8] mm/pgdat: remove pgdat lru_lock

Now pgdat was replaced by lruvec lock. It's not used anymore.

Signed-off-by: Alex Shi <alex.shi@...ux.alibaba.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Vlastimil Babka <vbabka@...e.cz>
Cc: Dan Williams <dan.j.williams@...el.com>
Cc: Michal Hocko <mhocko@...e.com>
Cc: Mel Gorman <mgorman@...hsingularity.net>
Cc: Wei Yang <richard.weiyang@...il.com>
Cc: Arun KS <arunks@...eaurora.org>
Cc: Oscar Salvador <osalvador@...e.de>
Cc: Mike Rapoport <rppt@...ux.vnet.ibm.com>
Cc: Alexander Duyck <alexander.h.duyck@...ux.intel.com>
Cc: Pavel Tatashin <pasha.tatashin@...een.com>
Cc: Alexander Potapenko <glider@...gle.com>
Cc: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Cc: Hugh Dickins <hughd@...gle.com>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Tejun Heo <tj@...nel.org>
Cc: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org
Cc: cgroups@...r.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 da00615baa52..3b6029bcb577 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -759,7 +759,6 @@ 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 f391c0c4ed1d..ffc30375c05b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6710,7 +6710,6 @@ 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(node_lruvec(pgdat));
 }
 
-- 
1.8.3.1