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authorZi Yan <zi.yan@cs.rutgers.edu>2017-10-13 15:57:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-10-13 16:18:32 -0700
commitaf0db981f35ea99b00a0b249bf0bedef8cf972e8 (patch)
tree7ad609d0549cc64a4c6763da52793d4464fe0e9b /mm/page_vma_mapped.c
parentde55c8b251974247edda38e952da8e8dd71683ec (diff)
downloadlinux-stericsson-af0db981f35ea99b00a0b249bf0bedef8cf972e8.tar.gz
mm: remove unnecessary WARN_ONCE in page_vma_mapped_walk().
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. Link: http://lkml.kernel.org/r/20171003142606.12324-1-zi.yan@sent.com Fixes: 616b8371539a ("mm: thp: enable thp migration in generic path") Signed-off-by: Zi Yan <zi.yan@cs.rutgers.edu> Reported-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Tested-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_vma_mapped.c')
-rw-r--r--mm/page_vma_mapped.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c
index 6a03946469a9..eb462e7db0a9 100644
--- a/mm/page_vma_mapped.c
+++ b/mm/page_vma_mapped.c
@@ -167,8 +167,7 @@ restart:
return not_found(pvmw);
return true;
}
- } else
- WARN_ONCE(1, "Non present huge pmd without pmd migration enabled!");
+ }
return not_found(pvmw);
} else {
/* THP pmd was split under us: handle on pte level */