code: mafs

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use the lowest when there is no least recently used extent

--- a/extents.c

+++ b/extents.c

@@ -34,10 +34,14 @@

 	Extent *e, *eclosest;

 	s64 howclose;

+	if(es == nil || es->lowest == nil)

+		panic("searchlrus: should not happen");

+

 	if(es->lru == nil)

-		panic("searchlrus: should not happen");;

+		eclosest = e = es->lowest;

+	else

+		eclosest = e = es->lru;

-	eclosest = e = es->lru;

 	*closest = belongs(e, blkno);

 	if(*closest == 0)

 		return es->lru;

@@ -62,6 +66,7 @@

 	if(es == nil || es->lowest == nil)

 		panic("searchlrusbysize: should not happen");

+

 	if(es->lru == nil){

 		*closest = len - es->lowest->len;

 		return es->lowest;