From e0cf717542b517018e302eeca29b3111bf17a925 Mon Sep 17 00:00:00 2001
From: Tor Egge <tegge@FreeBSD.org>
Date: Tue, 16 May 2006 00:14:20 +0000
Subject: [PATCH] Read block hints list from last snapshot on the active
 snapshot list.

---
 sys/ufs/ffs/ffs_snapshot.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/ufs/ffs/ffs_snapshot.c b/sys/ufs/ffs/ffs_snapshot.c
index 3b1f99bf78b0..79afa44c16f4 100644
--- a/sys/ufs/ffs/ffs_snapshot.c
+++ b/sys/ufs/ffs/ffs_snapshot.c
@@ -1889,6 +1889,7 @@ ffs_snapshot_mount(mp)
 	struct thread *td = curthread;
 	struct snapdata *sn;
 	struct vnode *vp;
+	struct vnode *lastvp;
 	struct inode *ip;
 	struct uio auio;
 	struct iovec aiov;
@@ -1906,6 +1907,7 @@ ffs_snapshot_mount(mp)
 	 * Process each snapshot listed in the superblock.
 	 */
 	vp = NULL;
+	lastvp = NULL;
 	sn = devvp->v_rdev->si_snapdata;
 	for (snaploc = 0; snaploc < FSMAXSNAP; snaploc++) {
 		if (fs->fs_snapinum[snaploc] == 0)
@@ -1976,7 +1978,9 @@ ffs_snapshot_mount(mp)
 		vp->v_vflag |= VV_SYSTEM;
 		VI_UNLOCK(devvp);
 		VOP_UNLOCK(vp, 0, td);
+		lastvp = vp;
 	}
+	vp = lastvp;
 	/*
 	 * No usable snapshots found.
 	 */