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Date: Wed, 28 Feb 2018 17:31:15 -0800 From: Matthew Wilcox <willy@...radead.org> To: Randy Dunlap <rdunlap@...radead.org> Cc: linux-mm@...ck.org, Matthew Wilcox <mawilcox@...rosoft.com>, Martin Schwidefsky <schwidefsky@...ibm.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3 0/4] Split page_type out from mapcount On Wed, Feb 28, 2018 at 03:22:49PM -0800, Randy Dunlap wrote: > On 02/28/2018 02:31 PM, Matthew Wilcox wrote: > > From: Matthew Wilcox <mawilcox@...rosoft.com> > > > > I want to use the _mapcount field to record what a page is in use as. > > This can help with debugging and we can also expose that information to > > userspace through /proc/kpageflags to help diagnose memory usage (not > > included as part of this patch set). > > Hey, > > Will there be updates to tools/vm/ also, or are these a different set of > (many) flags? Those KPF flags are the ones I was talking about. I haven't looked into what it takes to assign those flags yet.
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