From: Lorenzo Stoakes <lstoakes@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>, Hugh Dickins <hughd@google.com>,
linux-mm <linux-mm@kvack.org>,
Mel Gorman <mgorman@techsingularity.net>,
tbsaunde@tbsaunde.org, robert@ocallahan.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] mm: check VMA flags to avoid invalid PROT_NONE NUMA balancing
Date: Fri, 7 Oct 2016 17:22:40 +0100 [thread overview]
Message-ID: <20161007162240.GA14350@lucifer> (raw)
In-Reply-To: <CA+55aFzOYk_1Jcr8CSKyqfkXaOApZvCkX0_27mZk7PvGSE4xSw@mail.gmail.com>
On Fri, Oct 07, 2016 at 08:34:15AM -0700, Linus Torvalds wrote:
> Would you be willing to look at doing that kind of purely syntactic,
> non-semantic cleanup first?
Sure, more than happy to do that! I'll work on a patch for this.
> I think that if we end up having the FOLL_FORCE semantics, we're
> actually better off having an explicit FOLL_FORCE flag, and *not* do
> some kind of implicit "under these magical circumstances we'll force
> it anyway". The implicit thing is what we used to do long long ago, we
> definitely don't want to.
That's a good point, it would definitely be considerably more 'magical', and
expanding the conditions to include uprobes etc. would only add to that.
I wondered about an alternative parameter/flag but it felt like it was
more-or-less FOLL_FORCE in a different form, at which point it may as well
remain FOLL_FORCE :)
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next prev parent reply other threads:[~2016-10-07 16:22 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-11 22:54 [PATCH] mm: check VMA flags to avoid invalid PROT_NONE NUMA balancing Lorenzo Stoakes
2016-09-11 22:59 ` Lorenzo Stoakes
2016-09-25 18:47 ` Lorenzo Stoakes
2016-09-25 20:52 ` Linus Torvalds
2016-09-25 22:24 ` Linus Torvalds
2016-09-25 22:34 ` Rik van Riel
2016-09-25 22:50 ` Linus Torvalds
2016-09-25 23:28 ` Hugh Dickins
2016-09-26 0:49 ` Rik van Riel
2016-09-26 1:05 ` Linus Torvalds
2016-10-07 10:07 ` Lorenzo Stoakes
2016-10-07 15:34 ` Linus Torvalds
2016-10-07 16:22 ` Lorenzo Stoakes [this message]
2016-10-07 18:16 ` Hugh Dickins
2016-10-07 18:26 ` Lorenzo Stoakes
2016-10-10 7:47 ` Jan Kara
2016-10-10 8:28 ` Lorenzo Stoakes
2016-10-10 16:37 ` Jan Kara
2016-09-26 8:19 ` Mel Gorman
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