kernel: fix checkpages() and segflush() on SG_PHYSICAL type segments

do not touch s->map on SG_PHYSICAL type segments as they do
not have a pte map (s->mapsize == 0 && s->map == nil).

also remove the SG_PHYSICAL switch in freepte(), this is never
reached.

1 files changed, 4 insertions, 15 deletions

diff --git a/sys/src/9/port/page.c b/sys/src/9/port/page.c
index da1950e25..a55242c4d 100644
--- a/sys/src/9/port/page.c
+++ b/sys/src/9/port/page.c
@@ -377,21 +377,10 @@ freepte(Segment *s, Pte *p)
 
 	pg = p->first;
 	pe = p->last;
-
-	switch(s->type&SG_TYPE) {
-	case SG_PHYSICAL:
-		while(pg <= pe){
-			if(*pg != nil && decref(*pg) == 0)
-				free(*pg);
-			pg++;
-		}
-		break;
-	default:
-		while(pg <= pe){
-			if(*pg != nil)
-				putpage(*pg);
-			pg++;
-		}
+	while(pg <= pe){
+		if(*pg != nil)
+			putpage(*pg);
+		pg++;
 	}
 	free(p);
 }