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Kirill A. Shutemov authored
pmd value is stable only with mm->page_table_lock taken. After taking the lock we need to check that nobody modified the pmd before changing it. Signed-off-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: David Rientjes <rientjes@google.com> Reviewed-by:
Bob Liu <lliubbo@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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