Add gjournal specific code to the UFS file system:

- Add FS_GJOURNAL flag which enables gjournal support on a file system.
- Add cg_unrefs field to the cylinder group structure which holds
  number of unreferenced (orphaned) inodes in the given cylinder group.
- Add fs_unrefs field to the super block structure which holds
  total number of unreferenced (orphaned) inodes.
- When file or a directory is orphaned (last reference is removed, but
  object is still open), increase fs_unrefs and cg_unrefs fields,
  which is a hint for fsck in which cylinder groups looks for such
  (orphaned) objects.
- When file is last closed, decrease {fs,cg}_unrefs fields.
- Add VV_DELETED vnode flag which points at orphaned objects.

Sponsored by:	home.pl

1 files changed, 1 insertions, 0 deletions

diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h
index ed027a7..2bd0971 100644
--- a/sys/sys/vnode.h
+++ b/sys/sys/vnode.h
@@ -253,6 +253,7 @@ struct xvnode {
 #define	VV_SYSTEM	0x0080	/* vnode being used by kernel */
 #define	VV_PROCDEP	0x0100	/* vnode is process dependent */
 #define	VV_NOKNOTE	0x0200	/* don't activate knotes on this vnode */
+#define	VV_DELETED	0x0400	/* should be removed */
 
 /*
  * Vnode attributes.  A field value of VNOVAL represents a field whose value