[PATCH] mm: remove unnecessary WARN_ONCE in page_vma_mapped_walk().

2017-10-08 Thread Zi Yan
From: Zi Yan 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 Signed-off-by: Zi Yan

Re: [PATCH] mm: remove unnecessary WARN_ONCE in page_vma_mapped_walk().

2017-10-03 Thread Kirill A. Shutemov
On Tue, Oct 03, 2017 at 10:26:06AM -0400, Zi Yan wrote: > From: Zi Yan > > 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 gene