[PATCH 4/4] mm: /proc//sys/vm/stat_refresh stop checking monotonic numa stats

[Hugh Dickins]

All of the VM NUMA stats are event counts, incremented never decremented:
it is not very useful for vmstat_refresh() to check them throughout their
first aeon, then warn on them throughout their next.

Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx>
---

 mm/vmstat.c |    9 ---------
 1 file changed, 9 deletions(-)

--- vmstat3/mm/vmstat.c	2021-02-25 12:42:15.000000000 -0800
+++ vmstat4/mm/vmstat.c	2021-02-25 12:44:20.000000000 -0800
@@ -1854,15 +1854,6 @@ int vmstat_refresh(struct ctl_table *tab
 				__func__, zone_stat_name(i), val);
 		}
 	}
-#ifdef CONFIG_NUMA
-	for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) {
-		val = atomic_long_read(&vm_numa_stat[i]);
-		if (val < 0) {
-			pr_warn("%s: %s %ld\n",
-				__func__, numa_stat_name(i), val);
-		}
-	}
-#endif
 	for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) {
 		/*
 		 * Skip checking stats known to go negative occasionally.