diff mbox series

[v2,07/10] mm/memcg: Add missing counter index which are not update in interrupt.

Message ID 20220808125602.97747-8-goliath@infraroot.at
State New
Headers show
Series Backport MEMCG changes from v5.17 | expand

Commit Message

David Oberhollenzer Aug. 8, 2022, 12:55 p.m. UTC 
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Shakeel Butt reported that I missed a few counters which are not updated
in-interrupt context and therefore disabling preemption is fine.

Please fold into:
     "Protect per-CPU counter by disabling preemption on PREEMPT_RT"

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
[do: backported to v5.15]
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
---
 mm/memcontrol.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 4b5888bf0a60..50d2d5432018 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -774,10 +774,17 @@  void __mod_memcg_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
 	 */
 	__memcg_stats_lock();
 	if (IS_ENABLED(CONFIG_DEBUG_VM)) {
-		if (idx == NR_ANON_MAPPED || idx == NR_FILE_MAPPED)
+		switch (idx) {
+		case NR_ANON_MAPPED:
+		case NR_FILE_MAPPED:
+		case NR_ANON_THPS:
+		case NR_SHMEM_PMDMAPPED:
+		case NR_FILE_PMDMAPPED:
 			WARN_ON_ONCE(!in_task());
-		else
+			break;
+		default:
 			WARN_ON_ONCE(!irqs_disabled());
+		}
 	}
 
 	/* Update memcg */