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Message-ID: <Zh7k-jFRTe9RN2Lr@casper.infradead.org>
Date: Tue, 16 Apr 2024 21:52:10 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Sourav Panda <souravpanda@...gle.com>
Cc: corbet@....net, gregkh@...uxfoundation.org, rafael@...nel.org,
	akpm@...ux-foundation.org, mike.kravetz@...cle.com,
	muchun.song@...ux.dev, rppt@...nel.org, david@...hat.com,
	rdunlap@...radead.org, chenlinxuan@...ontech.com,
	yang.yang29@....com.cn, tomas.mudrunka@...il.com,
	bhelgaas@...gle.com, ivan@...udflare.com, pasha.tatashin@...een.com,
	yosryahmed@...gle.com, hannes@...xchg.org, shakeelb@...gle.com,
	kirill.shutemov@...ux.intel.com, wangkefeng.wang@...wei.com,
	adobriyan@...il.com, vbabka@...e.cz, Liam.Howlett@...cle.com,
	surenb@...gle.com, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-mm@...ck.org, weixugc@...gle.com
Subject: Re: [PATCH v10] mm: report per-page metadata information

On Tue, Apr 16, 2024 at 08:13:35PM +0000, Sourav Panda wrote:
> +++ b/include/linux/mmzone.h
> @@ -217,6 +217,10 @@ enum node_stat_item {
>  	PGDEMOTE_KSWAPD,
>  	PGDEMOTE_DIRECT,
>  	PGDEMOTE_KHUGEPAGED,
> +	NR_MEMMAP,		/* Page metadata size (struct page and page_ext)
> +				 * in pages
> +				 */

This is not how we write comments in the kernel ...


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