code: mafs

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sleep to avoid balloc() running the flush immediately

--- a/9p.c

+++ b/9p.c

@@ -354,7 +354,6 @@

 		mpsrvpid == 0 &&

 		lastflushtime < nsec()-Nrefresh){

 		fsflush();

-		lastflushtime = nsec();

 	}

 }

@@ -1062,10 +1061,17 @@

 void

 fsflush(void)

 {

+	u64 now;

+

+	/* this loop is to avoid balloc() calling it immediately

+		again and again */

+	while(lastflushtime > (now=nsec())-Nrefresh)

+		sleep((lastflushtime-(now-Nrefresh))/Nsec);

 	if(canwlock(&flushlck)){

 		flushold();

 		wunlock(&flushlck);

 	}

+	lastflushtime = now;

 }

 void