pmd_hugewillfault  220 arch/arm/include/asm/pgtable-2level.h #define pmd_hugewillfault(pmd)	(0)
pmd_hugewillfault  216 arch/arm/include/asm/pgtable-3level.h #define pmd_hugewillfault(pmd)	(!pmd_young(pmd) || !pmd_write(pmd))