1 files changed, 71 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/mm_types.h b/sys/compat/linuxkpi/common/include/linux/mm_types.h
new file mode 100644
index 000000000000..cb678c6b3c80
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/mm_types.h
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 2017 Mellanox Technologies, Ltd.
+ * All rights reserved.
+ *
+ * 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 _LINUX_MM_TYPES_H_
+#define	_LINUX_MM_TYPES_H_
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/page.h>
+#include <linux/rwsem.h>
+
+#include <asm/atomic.h>
+
+struct vm_area_struct;
+struct task_struct;
+struct vmspace;
+
+struct mm_struct {
+	struct vm_area_struct *mmap;
+	struct vmspace *vmspace;
+	atomic_t mm_count;
+	atomic_t mm_users;
+	size_t pinned_vm;
+	struct rw_semaphore mmap_sem;
+};
+
+extern void linux_mm_dtor(struct mm_struct *mm);
+
+static inline void
+mmdrop(struct mm_struct *mm)
+{
+	if (__predict_false(atomic_dec_and_test(&mm->mm_count)))
+		linux_mm_dtor(mm);
+}
+
+static inline void
+mmput(struct mm_struct *mm)
+{
+	if (__predict_false(atomic_dec_and_test(&mm->mm_users)))
+		mmdrop(mm);
+}
+
+extern struct mm_struct *linux_get_task_mm(struct task_struct *);
+#define	get_task_mm(task) linux_get_task_mm(task)
+
+#endif					/* _LINUX_MM_TYPES_H_ */