linux-kernel - [PATCH 3/5] mm: mprotect: use VM_ACCESS

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Message-ID: <20221019034945.93081-4-wangkefeng.wang@huawei.com>
Date:   Wed, 19 Oct 2022 11:49:43 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
CC:     Dinh Nguyen <dinguyen@...nel.org>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        <linux-sgx@...r.kernel.org>, <amd-gfx@...ts.freedesktop.org>,
        <linux-mm@...ck.org>, Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH 3/5] mm: mprotect: use VM_ACCESS_FLAGS

Simplify VM_READ|VM_WRITE|VM_EXEC with VM_ACCESS_FLAGS.

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 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