1 files changed, 6 insertions, 1 deletions

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 2373f0a7d340..2db2112aa31e 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1512,7 +1512,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
         struct page *page;
         pgtable_t pgtable;
         pmd_t _pmd;
-        bool young, write, dirty;
+        bool young, write, dirty, soft_dirty;
         unsigned long addr;
         int i;
 
@@ -1546,6 +1546,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
         write = pmd_write(*pmd);
         young = pmd_young(*pmd);
         dirty = pmd_dirty(*pmd);
+        soft_dirty = pmd_soft_dirty(*pmd);
 
         pmdp_huge_split_prepare(vma, haddr, pmd);
         pgtable = pgtable_trans_huge_withdraw(mm, pmd);
@@ -1562,6 +1563,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
                         swp_entry_t swp_entry;
                         swp_entry = make_migration_entry(page + i, write);
                         entry = swp_entry_to_pte(swp_entry);
+                        if (soft_dirty)
+                                entry = pte_swp_mksoft_dirty(entry);
                 } else {
                         entry = mk_pte(page + i, vma->vm_page_prot);
                         entry = maybe_mkwrite(entry, vma);
@@ -1569,6 +1572,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
                                 entry = pte_wrprotect(entry);
                         if (!young)
                                 entry = pte_mkold(entry);
+                        if (soft_dirty)
+                                entry = pte_mksoft_dirty(entry);
                 }
                 if (dirty)
                         SetPageDirty(page + i);