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npage: make flush synchronous

--- a/sys/src/cmd/npage.c

+++ b/sys/src/cmd/npage.c

@@ -600,7 +600,9 @@

 	Page *p;

 	for(p = root->down; p; p = nextpage(p)){

-		if(!canqlock(p))

+		if(age == 0)	/* synchronous flush */

+			qlock(p);

+		else if(!canqlock(p))

 			continue;

 		if((pagegen - p->gen) >= age)

 			unloadpage(p);

@@ -930,6 +932,7 @@

 					rotate = 0;

 				Unload:

 					viewgen++;

+					esetcursor(&reading);

 					unloadpages(0);

 					showpage(current);

 					continue;

-- 

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