[PATCH 3/5] mm: mprotect: use VM_ACCESS_FLAGS

From: Kefeng Wang
Date: Tue Oct 18 2022 - 23:30:53 EST


Simplify VM_READ|VM_WRITE|VM_EXEC with VM_ACCESS_FLAGS.

Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
---
mm/mprotect.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/mprotect.c b/mm/mprotect.c
index 668bfaa6ed2a..99762403cc8f 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -756,8 +756,7 @@ static int do_mprotect_pkey(unsigned long start, size_t len,
* If a permission is not passed to mprotect(), it must be
* cleared from the VMA.
*/
- mask_off_old_flags = VM_READ | VM_WRITE | VM_EXEC |
- VM_FLAGS_CLEAR;
+ mask_off_old_flags = VM_ACCESS_FLAGS | VM_FLAGS_CLEAR;

new_vma_pkey = arch_override_mprotect_pkey(vma, prot, pkey);
newflags = calc_vm_prot_bits(prot, new_vma_pkey);
--
2.35.3