code: mafs

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updated to work for the second scenario

--- a/blk.c

+++ b/blk.c

@@ -118,6 +118,15 @@

 		fprint(fd, "unknown tag type %d\n", tag);

 }

+/*

+	0		1	latest

+	------------------

+1.	0		255		0

+2.	255		0		1

+3.		>=			0

+4.		<			1

+

+ */

 u8

 recentmetadata(void *buf, void **cur, void **new)

 {

@@ -127,15 +136,23 @@

 		panic("recentmetadata buf == nil\n");

 	ms = buf;

-	if((ms[0].verd == 0 && ms[1].verd == 255) ||

-		(ms[0].verd >= ms[1].verd)){

-		if(new != nil)

-			*new = ms+1;

-		if(cur != nil)

-			*cur = ms;

-		return 0;

-	}

+	if(ms[0].verd == 0 && ms[1].verd == 255)

+		goto Use0;

+	else if(ms[0].verd == 255 && ms[1].verd == 0)

+		goto Use1;

+	else if(ms[0].verd >= ms[1].verd)

+		goto Use0;

+	else

+		goto Use1;

+Use0:

+	if(new != nil)

+		*new = ms+1;

+	if(cur != nil)

+		*cur = ms;

+	return 0;

+

+Use1:

 	if(new != nil)

 		*new = ms;

 	if(cur != nil)