diff options
| -rw-r--r-- | mm/mprotect.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index 6b2403a2f814..8d56d3933283 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -57,8 +57,10 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd, ptent = ptep_modify_prot_start(mm, addr, pte); if (!prot_numa) { + pte_t old_ptent = ptent; ptent = pte_modify(ptent, newprot); - updated = true; + if (ptent != old_ptent) + updated = true; } else { struct page *page; |