1 files changed, 24 insertions, 0 deletions

diff --git a/include/linux/xarray.h b/include/linux/xarray.h
new file mode 100644
index 000000000000..2dfc8006fe64
--- /dev/null
+++ b/include/linux/xarray.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+#ifndef _LINUX_XARRAY_H
+#define _LINUX_XARRAY_H
+/*
+ * eXtensible Arrays
+ * Copyright (c) 2017 Microsoft Corporation
+ * Author: Matthew Wilcox <mawilcox@microsoft.com>
+ */
+
+#include <linux/spinlock.h>
+
+#define xa_trylock(xa)          spin_trylock(&(xa)->xa_lock)
+#define xa_lock(xa)             spin_lock(&(xa)->xa_lock)
+#define xa_unlock(xa)           spin_unlock(&(xa)->xa_lock)
+#define xa_lock_bh(xa)          spin_lock_bh(&(xa)->xa_lock)
+#define xa_unlock_bh(xa)        spin_unlock_bh(&(xa)->xa_lock)
+#define xa_lock_irq(xa)         spin_lock_irq(&(xa)->xa_lock)
+#define xa_unlock_irq(xa)       spin_unlock_irq(&(xa)->xa_lock)
+#define xa_lock_irqsave(xa, flags) \
+                                spin_lock_irqsave(&(xa)->xa_lock, flags)
+#define xa_unlock_irqrestore(xa, flags) \
+                                spin_unlock_irqrestore(&(xa)->xa_lock, flags)
+
+#endif /* _LINUX_XARRAY_H */