D46843.diff
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	diff --git a/sys/compat/linuxkpi/common/include/linux/cleanup.h b/sys/compat/linuxkpi/common/include/linux/cleanup.h
	new file mode 100644
	--- /dev/null
	+++ b/sys/compat/linuxkpi/common/include/linux/cleanup.h
	@@ -0,0 +1,46 @@
	+/*-
	+ * SPDX-License-Identifier: BSD-2-Clause
	+ *
	+ * Copyright (c) 2024 The FreeBSD Foundation
	+ *
	+ * This software was developed by Björn Zeeb under sponsorship from
	+ * the FreeBSD Foundation.
	+ */
	+
	+#ifndef _LINUXKPI_LINUX_CLEANUP_H
	+#define _LINUXKPI_LINUX_CLEANUP_H
	+
	+#define __cleanup(_f) __attribute__((__cleanup__(_f)))
	+
	+/*
	+ * Note: "_T" are special as they are exposed into common code for
	+ * statements. Extra care should be taken when changing the code.
	+ */
	+#define DEFINE_GUARD(_n, _dt, _lock, _unlock) \
	+ \
	+ typedef _dt guard_ ## _n ## _t; \
	+ \
	+ static inline _dt \
	+ guard_ ## _n ## _create( _dt _T) \
	+ { \
	+ _dt c; \
	+ \
	+ c = ({ _lock; _T; }); \
	+ return (c); \
	+ } \
	+ \
	+ static inline void \
	+ guard_ ## _n ## _destroy(_dt *t) \
	+ { \
	+ _dt _T; \
	+ \
	+ _T = *t; \
	+ if (_T) { _unlock; }; \
	+ }
	+
	+/* We need to keep these calls unique. */
	+#define guard(_n) \
	+ guard_ ## _n ## _t guard_ ## _n ## _ ## __COUNTER__ \
	+ __cleanup(guard_ ## _n ## _destroy) = guard_ ## _n ## _create
	+
	+#endif /* _LINUXKPI_LINUX_CLEANUP_H */