From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthew Wilcox <willy@infradead.org>
Subject: Re: [PATCH 01/14] mm/lru: move pgdat lru_lock into lruvec
Date: Tue, 20 Aug 2019 06:40:32 -0700
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References: <1566294517-86418-1-git-send-email-alex.shi@linux.alibaba.com>
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To: Alex Shi <alex.shi@linux.alibaba.com>
Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mgorman@techsingularity.net>, Tejun Heo <tj@kernel.org>, Johannes Weiner <hannes@cmpxchg.org>, Michal Hocko <mhocko@kernel.org>, Vladimir Davydov <vdavydov.dev@gmail.com>, Vlastimil Babka <vbabka@suse.cz>, Dan Williams <dan.j.williams@intel.com>, Oscar Salvador <osalvador@suse.de>, Wei Yang <richard.weiyang@gmail.com>, Pavel Tatashin <pasha.tatashin@oracle.com>, Arun KS <arunks@codeaurora.org>, Qian Cai <cai@lca.pw>, Andrey Ryabinin <aryabinin@virtuozzo.com>, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Hugh Dickins <hughd@google.com>, =?iso-8859-1?B?Suly9G1l?= Glisse <jglisse@redhat.com>, Andrea Arcangeli <aarc>

On Tue, Aug 20, 2019 at 05:48:24PM +0800, Alex Shi wrote:
> +++ b/include/linux/mmzone.h
> @@ -295,6 +295,9 @@ struct zone_reclaim_stat {
>  
>  struct lruvec {
>  	struct list_head		lists[NR_LRU_LISTS];
> +	/* move lru_lock to per lruvec for memcg */
> +	spinlock_t			lru_lock;

This comment makes no sense outside the context of this patch.