From: Andrew Morton <akpm@linux-foundation.org>
To: Tong Tiangen <tongtiangen@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>,
Naoya Horiguchi <naoya.horiguchi@nec.com>,
<wangkefeng.wang@huawei.com>,
"Paul E . McKenney" <paulmck@kernel.org>,
Miaohe Lin <linmiaohe@huawei.com>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3] mm: memory-failure: use rcu lock instead of tasklist_lock when collect_procs()
Date: Sun, 3 Sep 2023 16:41:22 -0700 [thread overview]
Message-ID: <20230903164122.fb7148f8004402a7552c3ec6@linux-foundation.org> (raw)
In-Reply-To: <20230828022527.241693-1-tongtiangen@huawei.com>
On Mon, 28 Aug 2023 10:25:27 +0800 Tong Tiangen <tongtiangen@huawei.com> wrote:
> We found a softlock issue in our test, analyzed the logs, and found that
> the relevant CPU call trace as follows:
>
> ...
>
> By removing the use of tasklist_lock in task list iteration, we can break
> the softlock chain above.
>
So I assume we'd like to backport this fix into -stable kernels?
If so, are we able to identify a suitble Fixes: target?
next prev parent reply other threads:[~2023-09-03 23:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-28 2:25 Tong Tiangen
2023-09-03 23:41 ` Andrew Morton [this message]
2023-09-05 6:57 ` Tong Tiangen
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