include/linux/huge_mm.h:475: warning: No description found for return value of 'folio_test_pmd_mappable'
mm/khugepaged.c:1504: warning: No description found for return value of 'collapse_pte_mapped_thp'
mm/khugepaged.c:1840: warning: No description found for return value of 'collapse_file'
include/linux/huge_mm.h:497: warning: No description found for return value of 'folio_test_pmd_mappable'
mm/khugepaged.c:1507: warning: No description found for return value of 'collapse_pte_mapped_thp'
mm/khugepaged.c:1843: warning: No description found for return value of 'collapse_file'