From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5] mm: huge-vmap: fail gracefully on unexpected huge vmap mappings
Date: Fri, 9 Jun 2017 10:29:48 +0100 [thread overview]
Message-ID: <20170609092947.GB10665@leverpostej> (raw)
In-Reply-To: <CAKv+Gu_te54d9VU9AKYevkOvSpCBBeDQy5PE+PhX-t=ka3L8JA@mail.gmail.com>
On Fri, Jun 09, 2017 at 09:27:15AM +0000, Ard Biesheuvel wrote:
> On 9 June 2017 at 09:22, Mark Rutland <mark.rutland@arm.com> wrote:
> > On Fri, Jun 09, 2017 at 08:22:26AM +0000, Ard Biesheuvel wrote:
> >> v4: - use pud_bad/pmd_bad instead of pud_huge/pmd_huge, which don't require
> >> changes to hugetlb.h, and give us what we need on all architectures
> >> - move WARN_ON_ONCE() calls out of conditionals
>
> ^^^
Ah, sorry. Clearly I scanned this too quickly.
> >> + WARN_ON_ONCE(pud_bad(*pud));
> >> + if (pud_none(*pud) || pud_bad(*pud))
> >> return NULL;
> >
> > Nit: the WARN_ON_ONCE() can be folded into the conditional:
> >
> > if (pud_none(*pud) || WARN_ON_ONCE(pud_bad(*pud)))
> > reutrn NULL;
> Actually, it was Dave who requested them to be taken out of the conditional.
Fair enough. My ack stands, either way!
Thanks,
Mark.
next prev parent reply other threads:[~2017-06-09 9:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-09 8:22 [PATCH v5] mm: huge-vmap: fail gracefully on unexpected huge vmap mappings Ard Biesheuvel
2017-06-09 9:22 ` Mark Rutland
2017-06-09 9:27 ` Ard Biesheuvel
2017-06-09 9:29 ` Mark Rutland [this message]
2017-06-09 18:13 ` Laura Abbott
2017-06-15 21:24 ` Andrew Morton
2017-06-15 22:11 ` Ard Biesheuvel
2017-06-15 22:16 ` Andrew Morton
2017-06-15 22:29 ` Ard Biesheuvel
2017-06-16 8:38 ` Ard Biesheuvel
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