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Date:   Tue, 20 Aug 2019 06:40:32 -0700
From:   Matthew Wilcox <willy@infradead.org>
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>,
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        Vlastimil Babka <vbabka@suse.cz>,
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        Daniel Jordan <daniel.m.jordan@oracle.com>,
        Yafang Shao <laoar.shao@gmail.com>,
        Yang Shi <yang.shi@linux.alibaba.com>
Subject: Re: [PATCH 01/14] mm/lru: move pgdat lru_lock into lruvec
Message-ID: <20190820134032.GA24642@bombadil.infradead.org>
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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.