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Code Issues Releases Wiki Activity

mm: mprotect: use VM_ACCESS_FLAGS 

Simplify VM_READ|VM_WRITE|VM_EXEC with VM_ACCESS_FLAGS.

Link: https://lkml.kernel.org/r/20221019034945.93081-4-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kefeng Wang 2022-10-19 11:49:43 +08:00 committed by Andrew Morton
parent 4f20566f5c
commit e39ee675f4
1 changed files with 1 additions and 2 deletions
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3
mm/mprotect.c
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@ -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);