proper prototype for proc_nr_files()

Add a proper prototype for proc_nr_files() in include/linux/fs.h

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index e687808..b3a9f0d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -283,6 +283,7 @@
 #include <linux/init.h>
 #include <linux/pid.h>
 #include <linux/mutex.h>
+#include <linux/sysctl.h>
 
 #include <asm/atomic.h>
 #include <asm/semaphore.h>
@@ -2050,5 +2051,9 @@
 { }
 #endif	/* CONFIG_SECURITY */
 
+int proc_nr_files(ctl_table *table, int write, struct file *filp,
+		  void __user *buffer, size_t *lenp, loff_t *ppos);
+
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_FS_H */