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Subject: Re: [PATCH 1/2] mm: pgtable: add missing flag and statistics for
 kernel PTE page
From: Muchun Song <muchun.song@linux.dev>
In-Reply-To: <f023a6687b9f2109401e7522b727aa4708dc05f1.1706774109.git.zhengqi.arch@bytedance.com>
Date: Fri, 2 Feb 2024 10:47:41 +0800
Cc: Andrew Morton <akpm@linux-foundation.org>,
 Arnd Bergmann <arnd@arndb.de>,
 david@redhat.com,
 willy@infradead.org,
 linux-mm@kvack.org,
 linux-kernel@vger.kernel.org,
 linux-arch@vger.kernel.org
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Message-Id: <A7CAA1CD-8BD2-4517-BC37-F13E4D9C00CF@linux.dev>
References: <f023a6687b9f2109401e7522b727aa4708dc05f1.1706774109.git.zhengqi.arch@bytedance.com>
To: Qi Zheng <zhengqi.arch@bytedance.com>


> On Feb 1, 2024, at 16:05, Qi Zheng <zhengqi.arch@bytedance.com> wrote:
> 
> For kernel PTE page, we do not need to allocate and initialize its split
> ptlock, but as a page table page, it's still necessary to add PG_table
> flag and NR_PAGETABLE statistics for it.
> 
> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>

Reviewed-by: Muchun Song <muchun.song@linux.dev>

Thanks.