From ee930fffee469d076998274a2ca55e13dc1efb67 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:54 +0000
Subject: [PATCH] enable tun/tap/iptables
---
kernel/drivers/misc/cxl/cxllib.c | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/kernel/drivers/misc/cxl/cxllib.c b/kernel/drivers/misc/cxl/cxllib.c
index 5a3f912..2a1783f 100644
--- a/kernel/drivers/misc/cxl/cxllib.c
+++ b/kernel/drivers/misc/cxl/cxllib.c
@@ -1,10 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2017 IBM Corp.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/hugetlb.h>
@@ -211,7 +207,7 @@
struct vm_area_struct *vma = NULL;
int rc = 0;
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
vma = find_vma(mm, addr);
if (!vma) {
@@ -222,7 +218,7 @@
*vma_start = vma->vm_start;
*vma_end = vma->vm_end;
out:
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
return rc;
}
@@ -249,9 +245,8 @@
dar += page_size) {
if (dar < vma_start || dar >= vma_end) {
/*
- * We don't hold the mm->mmap_sem semaphore
- * while iterating, since the semaphore is
- * required by one of the lower-level page
+ * We don't hold mm->mmap_lock while iterating, since
+ * the lock is required by one of the lower-level page
* fault processing functions and it could
* create a deadlock.
*
--
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