diff options
Diffstat (limited to 'mm/mprotect.c')
| -rw-r--r-- | mm/mprotect.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index 420be0201118..20a46f21cca8 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -152,7 +152,8 @@ static unsigned long change_pte_range(struct mmu_gather *tlb, ptent = pte_mkwrite(ptent); } ptep_modify_prot_commit(vma, addr, pte, oldpte, ptent); - tlb_flush_pte_range(tlb, addr, PAGE_SIZE); + if (pte_needs_flush(oldpte, ptent)) + tlb_flush_pte_range(tlb, addr, PAGE_SIZE); pages++; } else if (is_swap_pte(oldpte)) { swp_entry_t entry = pte_to_swp_entry(oldpte); |