From: Alex Shi <alex.shi@linux.alibaba.com>
To: akpm@linux-foundation.org, mgorman@techsingularity.net,
tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru,
daniel.m.jordan@oracle.com, yang.shi@linux.alibaba.com,
willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
cgroups@vger.kernel.org, shakeelb@google.com,
iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com
Cc: Michal Hocko <mhocko@kernel.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>
Subject: [PATCH v12 08/16] mm/memcg: add debug checking in lock_page_memcg
Date: Thu, 11 Jun 2020 14:16:41 +0800 [thread overview]
Message-ID: <1591856209-166869-9-git-send-email-alex.shi@linux.alibaba.com> (raw)
In-Reply-To: <1591856209-166869-1-git-send-email-alex.shi@linux.alibaba.com>
Add a debug checking in lock_page_memcg, then we could get alarm
if anything wrong here.
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: cgroups@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
mm/memcontrol.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 0b38b6ad547d..78c16ac1473d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1983,6 +1983,12 @@ struct mem_cgroup *lock_page_memcg(struct page *page)
if (unlikely(!memcg))
return NULL;
+#ifdef CONFIG_PROVE_LOCKING
+ local_irq_save(flags);
+ might_lock(&memcg->move_lock);
+ local_irq_restore(flags);
+#endif
+
if (atomic_read(&memcg->moving_account) <= 0)
return memcg;
--
1.8.3.1
next prev parent reply other threads:[~2020-06-11 6:17 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-11 6:16 [PATCH v12 00/16] per memcg lru lock Alex Shi
2020-06-11 6:16 ` [PATCH v12 01/16] mm/vmscan: remove unnecessary lruvec adding Alex Shi
2020-06-11 6:16 ` [PATCH v12 02/16] mm/page_idle: no unlikely double check for idle page counting Alex Shi
2020-06-11 6:16 ` [PATCH v12 03/16] mm/compaction: correct the comments of compact_defer_shift Alex Shi
2020-06-11 6:16 ` [PATCH v12 04/16] mm/compaction: rename compact_deferred as compact_should_defer Alex Shi
2020-06-11 6:16 ` [PATCH v12 05/16] mm/thp: move lru_add_page_tail func to huge_memory.c Alex Shi
2020-06-11 6:16 ` [PATCH v12 06/16] mm/thp: clean up lru_add_page_tail Alex Shi
2020-06-11 6:16 ` [PATCH v12 07/16] mm/thp: narrow lru locking Alex Shi
2020-06-11 6:16 ` Alex Shi [this message]
2020-06-11 6:16 ` [PATCH v12 09/16] mm/lru: introduce TestClearPageLRU Alex Shi
2020-06-11 6:16 ` [PATCH v12 10/16] mm/compaction: do page isolation first in compaction Alex Shi
2020-06-12 10:26 ` Alex Shi
2020-06-11 6:16 ` [PATCH v12 11/16] mm/mlock: reorder isolation sequence during munlock Alex Shi
2020-06-11 6:16 ` [PATCH v12 12/16] mm/lru: replace pgdat lru_lock with lruvec lock Alex Shi
2020-06-12 10:28 ` Alex Shi
2020-06-11 6:16 ` [PATCH v12 13/16] mm/lru: introduce the relock_page_lruvec function Alex Shi
2020-06-11 6:16 ` [PATCH v12 14/16] mm/vmscan: use relock for move_pages_to_lru Alex Shi
2020-06-11 6:16 ` [PATCH v12 15/16] mm/pgdat: remove pgdat lru_lock Alex Shi
2020-06-11 6:16 ` [PATCH v12 16/16] mm/lru: revise the comments of lru_lock Alex Shi
2020-06-11 22:26 ` [PATCH v12 00/16] per memcg lru lock Hugh Dickins
2020-06-12 3:09 ` Alex Shi
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