From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp

---
 kernel/drivers/sbus/char/oradax.c |   24 +++++-------------------
 1 files changed, 5 insertions(+), 19 deletions(-)

diff --git a/kernel/drivers/sbus/char/oradax.c b/kernel/drivers/sbus/char/oradax.c
index 6516bc3..21b7cb6 100644
--- a/kernel/drivers/sbus/char/oradax.c
+++ b/kernel/drivers/sbus/char/oradax.c
@@ -1,18 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 /*
@@ -30,7 +18,7 @@
  * the recommended way for applications to use the coprocessor, and
  * the driver interface is not intended for general use.
  *
- * See Documentation/sparc/oradax/oracle-dax.txt for more details.
+ * See Documentation/sparc/oradax/oracle-dax.rst for more details.
  */
 
 #include <linux/uaccess.h>
@@ -422,9 +410,7 @@
 
 			if (p) {
 				dax_dbg("freeing page %p", p);
-				if (j == OUT)
-					set_page_dirty(p);
-				put_page(p);
+				unpin_user_pages_dirty_lock(&p, 1, j == OUT);
 				ctx->pages[i][j] = NULL;
 			}
 		}
@@ -437,13 +423,13 @@
 
 	dax_dbg("uva %p", va);
 
-	ret = get_user_pages_fast((unsigned long)va, 1, 1, p);
+	ret = pin_user_pages_fast((unsigned long)va, 1, FOLL_WRITE, p);
 	if (ret == 1) {
 		dax_dbg("locked page %p, for VA %p", *p, va);
 		return 0;
 	}
 
-	dax_dbg("get_user_pages failed, va=%p, ret=%d", va, ret);
+	dax_dbg("pin_user_pages failed, va=%p, ret=%d", va, ret);
 	return -1;
 }
 

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