From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Sasha Levin <sasha.levin@oracle.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
shli@kernel.org, Hugh Dickins <hughd@google.com>,
Rik van Riel <riel@redhat.com>, Shaohua Li <shli@fusionio.com>,
linux-mm <linux-mm@kvack.org>
Subject: Re: [patch 019/154] mm: make madvise(MADV_WILLNEED) support swap file prefetch
Date: Mon, 23 Dec 2013 12:54:29 +0200 (EET) [thread overview]
Message-ID: <20131223105429.CDCC9E0090@blue.fi.intel.com> (raw)
In-Reply-To: <20131223102524.GE11295@suse.de>
Mel Gorman wrote:
> On Fri, Dec 20, 2013 at 06:42:10PM +0100, Andrea Arcangeli wrote:
> > The reason for not doing this was that it felt slow to have that kind
> > of mangling in a fast path bad check. But maybe it's no problem to do
> > it. The above should also avoid the bug.
> >
>
> If this bug is related to mprotect then it should also have been fixed
> indirectly by commit 1667918b ("mm: numa: clear numa hinting information
> on mprotect") although for the wrong reasons. Applying cleanly requires
>
> mm: clear pmd_numa before invalidating
> mm: numa: do not clear PMD during PTE update scan
> mm: numa: do not clear PTE for pte_numa update
> mm: numa: clear numa hinting information on mprotect
>
> Is this bug reproducible in 3.13-rc5?
No. At least with my test case.
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2013-12-23 10:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20130223003232.4CDDB5A41B6@corp2gmr1-2.hot.corp.google.com>
[not found] ` <52AA0613.2000908@oracle.com>
[not found] ` <CA+55aFw3_0_Et9bbfWgGLXEUaGQW1HE8j=oGBqFG_8j+h6jmvQ@mail.gmail.com>
[not found] ` <CA+55aFyRZW=Uy9w+bZR0vMOFNPqV-yW2Xs9N42qEwTQ3AY0fDw@mail.gmail.com>
[not found] ` <52AE271C.4040805@oracle.com>
2013-12-15 22:58 ` [patch 019/154] mm: make madvise(MADV_WILLNEED) support swap file prefetch Linus Torvalds
2013-12-16 12:47 ` Kirill A. Shutemov
2013-12-16 15:18 ` Sasha Levin
2013-12-16 20:52 ` Andrea Arcangeli
2013-12-17 0:18 ` Sasha Levin
2013-12-17 12:44 ` Kirill A. Shutemov
2013-12-17 14:09 ` Sasha Levin
2013-12-20 13:10 ` Kirill A. Shutemov
2013-12-20 13:31 ` Kirill A. Shutemov
2013-12-20 13:36 ` Kirill A. Shutemov
2013-12-20 17:42 ` Andrea Arcangeli
2013-12-23 10:25 ` Mel Gorman
2013-12-23 10:54 ` Kirill A. Shutemov [this message]
2013-12-23 11:15 ` Kirill A. Shutemov
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