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Anshuman Khandual
7ce5f7e16a
Although pmd_present() might seem to indicate a valid and mapped pmd entry, in reality it returns true when pmd_page() points to a valid page in memory , regardless whether the pmd entry is mapped or not. Andrea Arcangeli had earlier explained [1] the required semantics for pmd_present(). This just updates the documentation for pmd_present() as required. [1] https://lore.kernel.org/lkml/[email protected]/ Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Anshuman Khandual <[email protected]> Acked-by: David Hildenbrand <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Andrea Arcangeli <[email protected]> Cc: Mike Rapoport <[email protected]> Signed-off-by: Andrew Morton <[email protected]>