Subject: [PATCH 15/16] debug_vm_pgtable/savedwrite: Use savedwrite test with protnone ptes

From: "Aneesh Kumar K.V" <[email-masked]>
Date: Wed, 12 Aug 2020 12:03:57 +0530

Saved write support was added to track the write bit of a pte after marking the
pte protnone. This was done so that AUTONUMA can convert a write pte to protnone
and still track the old write bit. When converting it back we set the pte write
bit correctly thereby avoiding a write fault again.

Signed-off-by: Aneesh Kumar K.V <[email-masked]>
---
 mm/debug_vm_pgtable.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c
index 3e112d0ba1b2..eea62d5e503b 100644
--- a/mm/debug_vm_pgtable.c
+++ b/mm/debug_vm_pgtable.c
@@ -1006,8 +1006,8 @@ static int __init debug_vm_pgtable(void)
 	pud_leaf_tests(pud_aligned, prot);
 
 #ifdef CONFIG_NUMA_BALANCING
-	pte_savedwrite_tests(pte_aligned, prot);
-	pmd_savedwrite_tests(pmd_aligned, prot);
+	pte_savedwrite_tests(pte_aligned, protnone);
+	pmd_savedwrite_tests(pmd_aligned, protnone);
 #endif
 	pte_special_tests(pte_aligned, prot);
 	pte_protnone_tests(pte_aligned, protnone);
-- 
2.26.2