- Define mnt_startzero and mnt_endzero as a range that excludes mnt_mtx

   and mnt_lock so that the mountpoint can be explicitly zeroed on
   creation.

Discussed with: tegge
Tested by:      kris
Sponsored by:   Isilon Systems, Inc.

1 files changed, 4 insertions, 2 deletions

diff --git a/sys/sys/mount.h b/sys/sys/mount.h
index 5c4bb87..f63361c 100644
--- a/sys/sys/mount.h
+++ b/sys/sys/mount.h
@@ -143,13 +143,14 @@ struct vfsopt;
  *
  */
 struct mount {
+	struct lock	mnt_lock;		/* mount structure lock */
+	struct mtx	mnt_mtx;		/* mount structure interlock */
+#define	mnt_startzero	mnt_list
 	TAILQ_ENTRY(mount) mnt_list;		/* (m) mount list */
 	struct vfsops	*mnt_op;		/* operations on fs */
 	struct vfsconf	*mnt_vfc;		/* configuration info */
 	struct vnode	*mnt_vnodecovered;	/* vnode we mounted on */
 	struct vnode	*mnt_syncer;		/* syncer vnode */
-	struct lock	mnt_lock;		/* mount structure lock */
-	struct mtx	mnt_mtx;		/* mount structure interlock */
 	int		mnt_ref;		/* (i) Reference count */
 	struct vnodelst	mnt_nvnodelist;		/* (i) list of vnodes */
 	int		mnt_nvnodelistsize;	/* (i) # of vnodes */
@@ -172,6 +173,7 @@ struct mount {
 	int		mnt_holdcnt;		/* hold count */
 	int		mnt_holdcntwaiters;	/* waits on hold count */
 	int		mnt_secondary_writes;   /* (i) # of secondary writes */
+#define	mnt_endzero	mnt_secondary_accwrites
 	int		mnt_secondary_accwrites;/* (i) secondary wr. starts */
 };