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diff --git a/sys/compat/linuxkpi/common/include/linux/mmu_context.h b/sys/compat/linuxkpi/common/include/linux/mmu_context.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/mmu_context.h
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 2018 Johannes Lundberg <johalun0@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice unmodified, this list of conditions, and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _LINUXKPI_LINUX_MMU_CONTEXT_H_
+#define _LINUXKPI_LINUX_MMU_CONTEXT_H_
+
+struct mm_struct;
+
+static inline void
+use_mm(struct mm_struct *mm)
+{
+ /* NOP is deliberate */
+}
+
+static inline void
+unuse_mm(struct mm_struct *mm)
+{
+ /* NOP is deliberate */
+}
+
+#endif /* _LINUXKPI_LINUX_MMU_CONTEXT_H_ */

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