nsproxy.h: add missing include

Kent Overstreet · Kent Overstreet · commit 6a2623b17634 · 2023-12-20T19:26:30.000-05:00
Signed-off-by: Kent Overstreet &lt;kent.overstreet@linux.dev&gt;
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h
@@ -2,6 +2,7 @@
 #ifndef _LINUX_NSPROXY_H
 #define _LINUX_NSPROXY_H
 
+#include <linux/refcount.h>
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 
