code: mafs

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fill the first block with metadata first

--- a/blk.c

+++ b/blk.c

@@ -123,9 +123,9 @@

 	------------------

 1.	0		255		0

 2.	255		0		1

-3.		>=			0

-4.		<			1

-

+3.		==			1	so that new will be 0

+4.		>			0

+5.		<			1

  */

 u8

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

@@ -137,15 +137,17 @@

 	ms = buf;

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

-		goto Use0;

+		goto Cur0;

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

-		goto Use1;

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

-		goto Use0;

+		goto Cur1;

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

+		goto Cur1;	/* so the new contents go in the first block */

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

+		goto Cur0;

 	else

-		goto Use1;

+		goto Cur1;

-Use0:

+Cur0:

 	if(new != nil)

 		*new = ms+1;

 	if(cur != nil)

@@ -152,7 +154,7 @@

 		*cur = ms;

 	return 0;

-Use1:

+Cur1:

 	if(new != nil)

 		*new = ms;

 	if(cur != nil)