D51730.1785228550.diff
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D51730.1785228550.diff
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	diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
	--- a/sys/kern/vfs_subr.c
	+++ b/sys/kern/vfs_subr.c
	@@ -5897,6 +5897,8 @@
	static void
	vop_fsync_debugprepost(struct vnode vp, const char name)
	{
	+ struct mount *mp;
	+
	if (vp->v_type == VCHR)
	;
	/*
	@@ -5914,10 +5916,16 @@
	* should still be caught when the stacked filesystem
	* invokes VOP_FSYNC() on the underlying filesystem.
	*/
	- else if (MNT_SHARED_WRITES(vp->v_mount))
	- ASSERT_VOP_LOCKED(vp, name);
	- else
	- ASSERT_VOP_ELOCKED(vp, name);
	+ else {
	+ mp = NULL;
	+ VOP_GETWRITEMOUNT(vp, &mp);
	+ if (vn_lktype_write(mp, vp) == LK_SHARED)
	+ ASSERT_VOP_LOCKED(vp, name);
	+ else
	+ ASSERT_VOP_ELOCKED(vp, name);
	+ if (mp != NULL)
	+ vfs_rel(mp);
	+ }
	}

	void