Mystery submission! :)

[Chris Pressey <cpressey@xxxxxxxxxxxxxxx>]

While cleaning out my source tree I came across this one-line local
modification.  Presumably someone who knows more about the kernel than I
do recommended I make this change when I was having problems with
something, but darned if I can remember who or why.

It's probably meaningless, but in case not, I thought I'd just toss it
up here before deleting it.

-Chris

Index: kern_physio.c
===================================================================
RCS file: /home/dcvs/src/sys/kern/kern_physio.c,v
retrieving revision 1.8
diff -u -r1.8 kern_physio.c
--- kern_physio.c	16 Feb 2004 20:11:20 -0000	1.8
+++ kern_physio.c	15 Jun 2004 03:45:52 -0000
@@ -143,6 +143,7 @@
 		}
 	}
 doerror:
+	bp->b_data = sa;
 	relpbuf(bp, NULL);
 	return (error);
 }