Re: [PATCH] mm: remove unnecessary WARN_ONCE in page_vma_mapped_walk().
From: Kirill A. Shutemov <hidden>
Date: 2017-10-03 16:44:52
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On Tue, Oct 03, 2017 at 10:26:06AM -0400, Zi Yan wrote:
From: Zi Yan <redacted>
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 <redacted>
Signed-off-by: Zi Yan <redacted>
Cc: "Kirill A. Shutemov" <redacted>
Cc: Anshuman Khandual <redacted>
Cc: Andrew Morton <akpm@linux-foundation.org>Acked-by: Kirill A. Shutemov <redacted> -- Kirill A. Shutemov