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From: Hillf Danton <hdanton@sina.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Hillf Danton <hdanton@sina.com>,
	linux-mm <linux-mm@kvack.org>,
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Subject: Re: [RFC v2] mm: add page preemption
Date: Mon, 28 Oct 2019 21:55:33 +0800
Message-Id: <20191028135533.17696-1-hdanton@sina.com>
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Date: Mon, 28 Oct 2019 15:26:09 +0300 Kirill A. Shutemov wrote:
>=20
> On Sat, Oct 26, 2019 at 07:28:08PM +0800, Hillf Danton wrote:
> > @@ -218,6 +219,9 @@ struct page {
> > =20
> >  #ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS
> >  	int _last_cpupid;
> > +#else
> > +	int prio;
> > +#define CONFIG_PAGE_PREEMPTION PP
> >  #endif
> >  } _struct_page_alignment;
> > =20
> [...]
> a lot of cache misses that this change would generate.

Queued on todo list. Thanks.

Hillf