[PATCH] ->llseek returns loff_t, even for /dev/mem

From: Christoph Hellwig <hch@lst.de>

memory_lseek() should return a loff_t.

drivers/char/mem.c

@@ -522,7 +522,7 @@ static loff_t null_lseek(struct file * file, loff_t offset, int orig)
  */
 static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
 {
-	int ret;
+	loff_t ret;
 
 	lock_kernel();
 	switch (orig) {