orangefs: make devreq_mutex static

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

fs/orangefs/devorangefs-req.c

@@ -20,6 +20,8 @@
 
 static int open_access_count;
 
+static DEFINE_MUTEX(devreq_mutex);
+
 #define DUMP_DEVICE_ERROR()                                                   \
 do {                                                                          \
 	gossip_err("*****************************************************\n");\

fs/orangefs/orangefs-kernel.h

@@ -510,7 +510,6 @@ bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op);
 
 int orangefs_normalize_to_errno(__s32 error_code);
 
-extern struct mutex devreq_mutex;
 extern struct mutex request_mutex;
 extern int debug;
 extern int op_timeout_secs;

fs/orangefs/orangefs-mod.c

@@ -54,9 +54,6 @@ module_param(module_parm_debug_mask, ulong, 0644);
 module_param(op_timeout_secs, int, 0);
 module_param(slot_timeout_secs, int, 0);
 
-/* synchronizes the request device file */
-DEFINE_MUTEX(devreq_mutex);
-
 /*
  * Blocks non-priority requests from being queued for servicing.  This
  * could be used for protecting the request list data structure, but