From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Zi Yan <zi.yan@sent.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Abdul Haleem <abdhalee@linux.vnet.ibm.com>,
Anshuman Khandual <khandual@linux.vnet.ibm.com>,
Zi Yan <zi.yan@cs.rutgers.edu>,
Andrew Morton <akpm@linux-foundation.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] mm: remove unnecessary WARN_ONCE in page_vma_mapped_walk().
Date: Tue, 3 Oct 2017 19:44:48 +0300 [thread overview]
Message-ID: <20171003164448.gasvu5iu3xaoscgo@node.shutemov.name> (raw)
In-Reply-To: <20171003142606.12324-1-zi.yan@sent.com>
On Tue, Oct 03, 2017 at 10:26:06AM -0400, Zi Yan wrote:
> From: Zi Yan <zi.yan@cs.rutgers.edu>
>
> A non present pmd entry can appear after pmd_lock is taken in
> page_vma_mapped_walk(), even if THP migration is not enabled.
> The WARN_ONCE is unnecessary.
>
> Fixes: 616b8371539a ("mm: thp: enable thp migration in generic path")
> Reported-and-tested-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
> Signed-off-by: Zi Yan <zi.yan@cs.rutgers.edu>
> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
--
Kirill A. Shutemov
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prev parent reply other threads:[~2017-10-03 16:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-03 14:26 Zi Yan
2017-10-03 16:44 ` Kirill A. Shutemov [this message]
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