static inline bool can_follow_write_pmd(pmd_t pmd, unsigned int flags)
{
	return pmd_write(pmd) || ((flags & FOLL_COW) && pmd_dirty(pmd));
}
static inline bool can_follow_write_pmd(pmd_t pmd, unsigned int flags)
{
	return pmd_write(pmd) || ((flags & FOLL_COW) && pmd_dirty(pmd));
}