1 files changed, 4 insertions, 0 deletions

diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
index 18dc3ff25606..1e9d3bbda9d6 100644
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -929,6 +929,8 @@ vn_start_write(vp, mpp, flags)
 	struct mount *mp;
 	int error;
 
+	GIANT_REQUIRED;
+
 	/*
 	 * If a vnode is provided, get and return the mount point that
 	 * to which it will write.
@@ -1007,6 +1009,8 @@ vn_finished_write(mp)
 	struct mount *mp;
 {
 
+	GIANT_REQUIRED;
+
 	if (mp == NULL)
 		return;
 	mp->mnt_writeopcount--;