Add a #define for the device name of the mmap device for devstat.

Constify the geom identification pointer.

2 files changed, 7 insertions, 2 deletions

diff --git a/sys/kern/subr_devstat.c b/sys/kern/subr_devstat.c
index b965635..4581fe9 100644
--- a/sys/kern/subr_devstat.c
+++ b/sys/kern/subr_devstat.c
@@ -397,7 +397,7 @@ devstat_alloc(void)
 
 	if (!once) {
 		make_dev(&devstat_cdevsw, 0,
-		    UID_ROOT, GID_WHEEL, 0400, "devstat");
+		    UID_ROOT, GID_WHEEL, 0400, DEVSTAT_DEVICE_NAME);
 		once++;
 	}
 	TAILQ_FOREACH(spp, &pagelist, list) {
diff --git a/sys/sys/devicestat.h b/sys/sys/devicestat.h
index c06df37..d8288a2 100644
--- a/sys/sys/devicestat.h
+++ b/sys/sys/devicestat.h
@@ -40,6 +40,11 @@
 #define DEVSTAT_NAME_LEN  16
 
 /*
+ * device name for the mmap device
+ */
+#define DEVSTAT_DEVICE_NAME "devstat"
+
+/*
  * ATTENTION:  The devstat version below should be incremented any time a
  * change is made in struct devstat, or any time a change is made in the
  * enumerated types that struct devstat uses.  (Only if those changes
@@ -163,7 +168,7 @@ struct devstat {
 						      */
 	devstat_type_flags	device_type;	     /* Device type */
 	devstat_priority	priority;	     /* Controls list pos. */
-	void			*id;		     /*
+	const void		*id;		     /*
 						      * Identification for
 						      * GEOM nodes
 						      */