[linux-lvm] Snapshot resizing pe_allocated correction

["Dale J. Stephenson" <dalestephenson mac com>]

Another slight fix.  When a snapshot is resized, the volume groups' 
pe_allocated field is not updated.  The following patch should fix this 
problem:

--- linux/drivers/md/lvm.c.orig	Mon Apr 29 08:50:41 2002
+++ linux/drivers/md/lvm.c	Mon Apr 29 12:41:29 2002
@@ -2280,6 +2280,9 @@
		return -ENOMEM;
	}

+	vg_ptr->pe_allocated -= old_lv->lv_allocated_snapshot_le;
+	vg_ptr->pe_allocated += new_lv->lv_allocated_le;
+
	return 0;
}