mm: Account for a THP NUMA hinting update as one PTE update

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / mprotect.c

diff --git a/mm/mprotect.c b/mm/mprotect.c
index 94722a4..412ba2b 100644 (file)
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -94,13 +94,16 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
                        swp_entry_t entry = pte_to_swp_entry(oldpte);
 
                        if (is_write_migration_entry(entry)) {
+                               pte_t newpte;
                                /*
                                 * A protection check is difficult so
                                 * just be safe and disable write
                                 */
                                make_migration_entry_read(&entry);
-                               set_pte_at(mm, addr, pte,
-                                       swp_entry_to_pte(entry));
+                               newpte = swp_entry_to_pte(entry);
+                               if (pte_swp_soft_dirty(oldpte))
+                                       newpte = pte_swp_mksoft_dirty(newpte);
+                               set_pte_at(mm, addr, pte, newpte);
                        }
                        pages++;
                }
@@ -145,7 +148,7 @@ static inline unsigned long change_pmd_range(struct vm_area_struct *vma,
                                split_huge_page_pmd(vma, addr, pmd);
                        else if (change_huge_pmd(vma, pmd, addr, newprot,
                                                 prot_numa)) {
-                               pages += HPAGE_PMD_NR;
+                               pages++;
                                continue;
                        }
                        /* fall through */