#include <linux/types.h>
#include <linux/string.h>
-#include <linux/mutex.h>
+#include <asm/semaphore.h>
struct seq_operations;
struct file;
size_t count;
loff_t index;
loff_t version;
- struct mutex lock;
+ struct semaphore sem;
struct seq_operations *op;
void *private;
};