PERFORCE change 139542 for review

[Sam Leffler]

http://perforce.freebsd.org/chv.cgi?CH=139542

Change 139542 by sam at sam_ebb on 2008/04/07 21:11:18

	add mountroot event to be notified when the rootvnode is
	valid; this replaces SI_SUB_MOUNT_ROOT which was made
	meaningless with the "devfs pivotroot changes" (to quote jhb)

Affected files ...

.. //depot/projects/vap/sys/kern/vfs_mount.c#11 edit
.. //depot/projects/vap/sys/sys/eventhandler.h#6 edit

Differences ...

==== //depot/projects/vap/sys/kern/vfs_mount.c#11 (text+ko) ====

@@ -1488,6 +1488,8 @@
 	FILEDESC_SUNLOCK(p->p_fd);
 
 	VOP_UNLOCK(rootvnode, 0);
+
+	EVENTHANDLER_INVOKE(mountroot);
 }
 
 /*

==== //depot/projects/vap/sys/sys/eventhandler.h#6 (text+ko) ====

@@ -171,6 +171,10 @@
 typedef void (*vfs_lowvnodes_handler_t)(void *, int);
 EVENTHANDLER_DECLARE(vfs_lowvnodes, vfs_lowvnodes_handler_t);
 
+/* Root mounted event */
+typedef void (*mountroot_handler_t)(void *);
+EVENTHANDLER_DECLARE(mountroot, mountroot_handler_t);
+
 /*
  * Process events
  * process_fork and exit handlers are called without Giant.