Index: sys/vm/vm_pageout.c
===================================================================
--- sys/vm/vm_pageout.c
+++ sys/vm/vm_pageout.c
@@ -1122,7 +1122,7 @@
 		if (vmd->vmd_laundry_request == VM_LAUNDRY_SHORTFALL &&
 		    (!in_shortfall || shortfall_cycle == 0)) {
 			shortfall = vm_laundry_target(vmd) +
-			    vmd->vmd_pageout_deficit;
+			    atomic_load_int(&vmd->vmd_shortage);
 			target = 0;
 		} else
 			shortfall = 0;
@@ -2063,14 +2063,17 @@
 		 */
 		shortage = pidctrl_daemon(&vmd->vmd_pid, vmd->vmd_free_count);
 		if (shortage > 0) {
+			atomic_store_int(&vmd->vmd_shortage, shortage);
 			ofree = vmd->vmd_free_count;
 			if (vm_pageout_lowmem() && vmd->vmd_free_count > ofree)
 				shortage -= min(vmd->vmd_free_count - ofree,
 				    (u_int)shortage);
 			target_met = vm_pageout_scan_inactive(vmd, shortage,
 			    &addl_shortage);
-		} else
+		} else {
+			atomic_store_int(&vmd->vmd_shortage, 0);
 			addl_shortage = 0;
+		}
 
 		/*
 		 * Scan the active queue.  A positive value for shortage
Index: sys/vm/vm_pagequeue.h
===================================================================
--- sys/vm/vm_pagequeue.h
+++ sys/vm/vm_pagequeue.h
@@ -249,6 +249,7 @@
 	long vmd_segs;			/* (c) bitmask of the segments */
 	u_int __aligned(CACHE_LINE_SIZE) vmd_free_count; /* (a,f) free page count */
 	u_int vmd_pageout_deficit;	/* (a) Estimated number of pages deficit */
+	u_int vmd_shortage;		/* (a) Current predicted shortage. */
 	uint8_t vmd_pad[CACHE_LINE_SIZE - (sizeof(u_int) * 2)];
 
 	/* Paging control variables, used within single threaded page daemon. */