From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Hillf Danton <dhillf@gmail.com>, Hugh Dickins <hughd@google.com>,
Dave Jones <davej@redhat.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>, Linux-MM <linux-mm@kvack.org>
Subject: Re: oops in copy_page_rep()
Date: Tue, 8 Jan 2013 18:31:41 +0200 [thread overview]
Message-ID: <20130108163141.GA27555@shutemov.name> (raw)
In-Reply-To: <CA+55aFzfUABPycR82aNQhHNasQkL1kmxLN1rD0DJcByFtead3g@mail.gmail.com>
On Tue, Jan 08, 2013 at 07:37:06AM -0800, Linus Torvalds wrote:
> On Tue, Jan 8, 2013 at 5:04 AM, Hillf Danton <dhillf@gmail.com> wrote:
> > On Tue, Jan 8, 2013 at 1:34 AM, Linus Torvalds
> > <torvalds@linux-foundation.org> wrote:
> >>
> >> Hmm. Is there some reason we never need to worry about it for the
> >> "pmd_numa()" case just above?
> >>
> >> A comment about this all might be a really good idea.
> >>
> > Yes Sir, added.
>
> Heh. I was more thinking about why do_huge_pmd_wp_page() needs it, but
> do_huge_pmd_numa_page() does not.
It does. The check should be moved up.
> Also, do we actually need it for huge_pmd_set_accessed()? The
> *placement* of that thing confuses me. And because it confuses me, I'd
> like to understand it.
We need it for huge_pmd_set_accessed() too.
Looks like a mis-merge. The original patch for huge_pmd_set_accessed() was
correct: http://lkml.org/lkml/2012/10/25/402
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2013-01-08 16:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20130105152208.GA3386@redhat.com>
[not found] ` <CAJd=RBCb0oheRnVCM4okVKFvKGzuLp9GpZJCkVY3RR-J=XEoBA@mail.gmail.com>
[not found] ` <alpine.LNX.2.00.1301061037140.28950@eggly.anvils>
[not found] ` <CAJd=RBAps4Qk9WLYbQhLkJd8d12NLV0CbjPYC6uqH_-L+Vu0VQ@mail.gmail.com>
[not found] ` <CA+55aFyYAf6ztDLsxWFD+6jb++y0YNjso-9j+83Mm+3uQ=8PdA@mail.gmail.com>
2013-01-08 13:04 ` oops in copy_page_rep() Hillf Danton
2013-01-08 15:37 ` Linus Torvalds
2013-01-08 16:31 ` Kirill A. Shutemov [this message]
2013-01-08 16:52 ` Linus Torvalds
2013-01-08 17:30 ` Kirill A. Shutemov
2013-01-08 17:38 ` Linus Torvalds
2013-01-08 17:49 ` Andrea Arcangeli
2013-01-08 18:03 ` Kirill A. Shutemov
2013-01-11 7:50 ` Simon Jeons
2013-01-11 14:01 ` Andrea Arcangeli
2013-01-08 17:37 ` Andrea Arcangeli
2013-01-08 17:51 ` Linus Torvalds
2013-01-08 18:03 ` Andrea Arcangeli
2013-01-08 18:21 ` Linus Torvalds
2013-01-09 11:38 ` Hillf Danton
2013-01-09 4:23 ` Hugh Dickins
2013-01-09 11:44 ` Mel Gorman
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