D25942.id75365.diff
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	Index: head/sys/compat/linuxkpi/common/include/linux/kref.h
	===================================================================
	--- head/sys/compat/linuxkpi/common/include/linux/kref.h
	+++ head/sys/compat/linuxkpi/common/include/linux/kref.h
	@@ -38,6 +38,7 @@
	#include <linux/compiler.h>
	#include <linux/kernel.h>
	#include <linux/mutex.h>
	+#include <linux/refcount.h>

	#include <asm/atomic.h>

	@@ -76,6 +77,20 @@
	}
	return 0;
	}
	+
	+static inline int
	+kref_put_lock(struct kref kref, void (rel)(struct kref *kref),
	+ spinlock_t *lock)
	+{
	+
	+ if (refcount_release(&kref->refcount.counter)) {
	+ spin_lock(lock);
	+ rel(kref);
	+ return (1);
	+ }
	+ return (0);
	+}
	+

	static inline int
	kref_sub(struct kref *kref, unsigned int count,