linux-kernel - Re: [PATCH 2/2] mm/selftests: Don't prefault in gup

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Message-ID: <Zi-lzjgoEiBGlsrX@x1n>
Date: Mon, 29 Apr 2024 09:51:10 -0400
From: Peter Xu <peterx@...hat.com>
To: David Hildenbrand <david@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Aneesh Kumar K . V" <aneesh.kumar@...nel.org>,
	Lorenzo Stoakes <lstoakes@...il.com>,
	John Hubbard <jhubbard@...dia.com>, linuxppc-dev@...ts.ozlabs.org,
	Muchun Song <muchun.song@...ux.dev>,
	Jason Gunthorpe <jgg@...dia.com>
Subject: Re: [PATCH 2/2] mm/selftests: Don't prefault in gup_longterm tests

On Mon, Apr 29, 2024 at 03:26:22PM +0200, David Hildenbrand wrote:
> > The test patch here doesn't need to rush. David, how about you prepare a
> > better and verified patch and post it separately, making sure to cover all
> > the things we used to cover plus the unshare?  IIUC it used to be not
> > touched because of pte_write() always returns true with a write prefault.
> > 
> > Then we let patch 1 go through first, and drop this one?
> 
> Whatever you prefer!

Thanks!

Andrew, would you consider taking patch 1 but ignore this patch 2? Or do
you prefer me to resend?

-- 
Peter Xu