From d90d8244cd7cbc83d6707dd90648f64265af4560 Mon Sep 17 00:00:00 2001
From: phk <phk@FreeBSD.org>
Date: Thu, 16 Sep 2004 17:28:56 +0000
Subject: Do not traverse list of snapshots if there isn't one.

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

(limited to 'sys/ufs')

diff --git a/sys/ufs/ffs/ffs_snapshot.c b/sys/ufs/ffs/ffs_snapshot.c
index bde2abe..ac07e4b 100644
--- a/sys/ufs/ffs/ffs_snapshot.c
+++ b/sys/ufs/ffs/ffs_snapshot.c
@@ -1563,6 +1563,10 @@ ffs_snapblkfree(fs, devvp, bno, size, inum)
 retry:
 	VI_LOCK(devvp);
 	sn = devvp->v_rdev->si_snapdata;
+	if (sn == NULL) {
+		VI_UNLOCK(devvp);
+		return (0);
+	}
 	TAILQ_FOREACH(ip, &sn->sn_head, i_nextsnap) {
 		vp = ITOV(ip);
 		/*
-- 
cgit v1.1