The patch titled
Subject: memcg-v1-no-need-for-memcg-locking-for-mglru-fix
has been added to the -mm mm-unstable branch. Its filename is
memcg-v1-no-need-for-memcg-locking-for-mglru-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/memcg-v1-no-need-for-memcg-locking-for-mglru-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Yu Zhao <yuzhao@xxxxxxxxxx>
Subject: memcg-v1-no-need-for-memcg-locking-for-mglru-fix
Date: Mon, 4 Nov 2024 10:30:29 -0700
remove !rcu_read_lock_held() assertion
WARNING: CPU: 0 PID: 85 at mm/vmscan.c:3140 folio_update_gen+0x23d/0x250 mm/vmscan.c:3140
...
Link: https://lkml.kernel.org/r/ZykEtcHrQRq-KrBC@xxxxxxxxxx
Signed-off-by: Yu Zhao <yuzhao@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Cc: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 1 -
1 file changed, 1 deletion(-)
--- a/mm/vmscan.c~memcg-v1-no-need-for-memcg-locking-for-mglru-fix
+++ a/mm/vmscan.c
@@ -3137,7 +3137,6 @@ static int folio_update_gen(struct folio
unsigned long new_flags, old_flags = READ_ONCE(folio->flags);
VM_WARN_ON_ONCE(gen >= MAX_NR_GENS);
- VM_WARN_ON_ONCE(!rcu_read_lock_held());
do {
/* lru_gen_del_folio() has isolated this page? */
_
Patches currently in -mm which might be from yuzhao@xxxxxxxxxx are
mm-page_alloc-keep-track-of-free-highatomic.patch
memcg-v1-no-need-for-memcg-locking-for-mglru-fix.patch
