From: Mel Gorman <mgorman@techsingularity.net>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: akpm@linux-foundation.org, mhocko@suse.com, linux-mm@kvack.org
Subject: Re: [PATCH] mm: get pfn by page_to_pfn() instead of save in page->private
Date: Thu, 18 Oct 2018 14:39:17 +0100 [thread overview]
Message-ID: <20181018133917.GO5819@techsingularity.net> (raw)
In-Reply-To: <20181018130429.37837-1-richard.weiyang@gmail.com>
On Thu, Oct 18, 2018 at 09:04:29PM +0800, Wei Yang wrote:
> This is not necessary to save the pfn to page->private.
>
> The pfn could be retrieved by page_to_pfn() directly.
>
> Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
page_to_pfn is not free which is why it's cached.
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2018-10-18 13:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-18 13:04 [PATCH] mm: get pfn by page_to_pfn() instead of save in page->private Wei Yang
2018-10-18 13:10 ` Matthew Wilcox
2018-10-18 13:15 ` Michal Hocko
2018-10-18 14:10 ` Wei Yang
2018-10-18 16:30 ` Michal Hocko
2018-10-19 3:32 ` Wei Yang
2018-10-18 13:39 ` Mel Gorman [this message]
2018-10-18 14:19 ` Wei Yang
2018-10-18 14:53 ` Mel Gorman
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