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Date: Tue, 25 Aug 2020 17:24:22 -0700 From: Lokesh Gidra <lokeshgidra@...gle.com> To: Sebastian Andrzej Siewior <bigeasy@...utronix.de> Cc: Kees Cook <keescook@...omium.org>, Jonathan Corbet <corbet@....net>, Peter Xu <peterx@...hat.com>, Andrea Arcangeli <aarcange@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, Alexander Viro <viro@...iv.linux.org.uk>, Stephen Smalley <stephen.smalley.work@...il.com>, Eric Biggers <ebiggers@...nel.com>, Daniel Colascione <dancol@...col.org>, "Joel Fernandes (Google)" <joel@...lfernandes.org>, Linux FS Devel <linux-fsdevel@...r.kernel.org>, linux-kernel <linux-kernel@...r.kernel.org>, linux-doc@...r.kernel.org, Kalesh Singh <kaleshsingh@...gle.com>, Calin Juravle <calin@...gle.com>, Suren Baghdasaryan <surenb@...gle.com>, Nick Kralevich <nnk@...gle.com>, Jeffrey Vander Stoep <jeffv@...gle.com>, kernel-team@...roid.com, Mike Rapoport <rppt@...ux.vnet.ibm.com>, Shaohua Li <shli@...com>, Jerome Glisse <jglisse@...hat.com>, Mauro Carvalho Chehab <mchehab+huawei@...nel.org>, Johannes Weiner <hannes@...xchg.org>, Mel Gorman <mgorman@...hsingularity.net>, Nitin Gupta <nigupta@...dia.com>, Vlastimil Babka <vbabka@...e.cz>, Iurii Zaikin <yzaikin@...gle.com>, Luis Chamberlain <mcgrof@...nel.org>, Daniel Colascione <dancol@...gle.com> Subject: Re: [PATCH v2 1/2] Add UFFD_USER_MODE_ONLY On Mon, Aug 24, 2020 at 5:32 AM Sebastian Andrzej Siewior <bigeasy@...utronix.de> wrote: > > On 2020-08-21 18:40:17 [-0700], Lokesh Gidra wrote: > > --- a/fs/userfaultfd.c > > +++ b/fs/userfaultfd.c > > @@ -1966,6 +1969,7 @@ static void init_once_userfaultfd_ctx(void *mem) > > > > SYSCALL_DEFINE1(userfaultfd, int, flags) > > { > > + static const int uffd_flags = UFFD_USER_MODE_ONLY; > > struct userfaultfd_ctx *ctx; > > int fd; > Why? Not sure! I guess Daniel didn't want to repeat the long flag name twice. Thanks for catching that. I'll send another version fixing this. > > Sebastian
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