The patch titled
Subject: mm: mprotect: use VM_ACCESS_FLAGS
has been added to the -mm mm-unstable branch. Its filename is
mm-mprotect-use-vm_access_flags.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mprotect-use-vm_access_flags.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: mm: mprotect: use VM_ACCESS_FLAGS
Date: Wed, 19 Oct 2022 11:49:43 +0800
Simplify VM_READ|VM_WRITE|VM_EXEC with VM_ACCESS_FLAGS.
Link: https://lkml.kernel.org/r/20221019034945.93081-4-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxxx>
Cc: Dinh Nguyen <dinguyen@xxxxxxxxxx>
Cc: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Cc: "Pan, Xinhui" <Xinhui.Pan@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mprotect.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/mprotect.c~mm-mprotect-use-vm_access_flags
+++ a/mm/mprotect.c
@@ -756,8 +756,7 @@ static int do_mprotect_pkey(unsigned lon
* 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);
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
mm-rmap-rename-page_not_mapped-to-folio_not_mapped.patch
mm-remove-kern_addr_valid-completely.patch
nios2-remove-unused-init_mmap.patch
x86-sgx-use-vm_access_flags.patch
mm-mprotect-use-vm_access_flags.patch
mm-debug_vm_pgtable-use-vm_access_flags.patch
amdgpu-use-vm_access_flags.patch
