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swap: do less print spamming, sched after killbig so killed proc can get released

--- a/sys/src/9/port/swap.c

+++ b/sys/src/9/port/swap.c

@@ -176,13 +176,9 @@

 			}

 			qunlock(&p->seglock);

 		} else {

-			print("out of memory\n");

 			killbig("out of memory");

 			freebroken();		/* can use the memory */

-

-			/* Emulate the old system if no swap channel */

-			if(!swapimage.c)

-				tsleep(&up->sleep, return0, 0, 5000);

+			sched();

 		}

 	}

 	goto loop;

-- 

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