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-rw-r--r--sys/fs/nullfs/null_subr.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/fs/nullfs/null_subr.c b/sys/fs/nullfs/null_subr.c
index 6bfae2c..ae29bfc 100644
--- a/sys/fs/nullfs/null_subr.c
+++ b/sys/fs/nullfs/null_subr.c
@@ -209,7 +209,11 @@ null_nodeget(mp, lowervp, vpp)
struct vnode *vp;
int error;
- ASSERT_VOP_LOCKED(lowervp, "lowervp");
+ /*
+ * The insmntque1() call below requires the exclusive lock on
+ * the nullfs vnode.
+ */
+ ASSERT_VOP_ELOCKED(lowervp, "lowervp");
KASSERT(lowervp->v_usecount >= 1, ("Unreferenced vnode %p\n", lowervp));
/* Lookup the hash firstly */
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