On 1/29/24 22:32, David Hildenbrand wrote:

+static inline pte_t get_and_clear_full_ptes(struct mm_struct *mm,
+		unsigned long addr, pte_t *ptep, unsigned int nr, int full)
+{
+	pte_t pte, tmp_pte;
+
+	pte = ptep_get_and_clear_full(mm, addr, ptep, full);
+	while (--nr) {
+		ptep++;
+		addr += PAGE_SIZE;
+		tmp_pte = ptep_get_and_clear_full(mm, addr, ptep, full);
+		if (pte_dirty(tmp_pte))
+			pte = pte_mkdirty(pte);
+		if (pte_young(tmp_pte))
+			pte = pte_mkyoung(pte);

I am wondering whether it's worthy to move the pte_mkdirty() and pte_mkyoung()
out of the loop and just do it one time if needed. The worst case is that they
are called nr - 1 time. Or it's just too micro?


Regards
Yin, Fengwei

+	}
+	return pte;
+}