From: Christoph Hellwig <hch@lst.de>
To: Yi Zhang <yi.zhang@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>,
Dan Williams <dan.j.williams@intel.com>,
linux-block <linux-block@vger.kernel.org>,
Linux NVDIMM <nvdimm@lists.linux.dev>,
Ming Lei <ming.lei@redhat.com>
Subject: Re: [regression] ndctl destroy-namespace operation hang from 5.15.0-rc6
Date: Mon, 18 Oct 2021 19:07:42 +0200 [thread overview]
Message-ID: <20211018170742.GA3074@lst.de> (raw)
In-Reply-To: <CAHj4cs_XMKWZiW-6Xfion1mkH4jn7DnrDWq0g6Kg8HawcpHdCg@mail.gmail.com>
On Tue, Oct 19, 2021 at 12:13:09AM +0800, Yi Zhang wrote:
> So the bisecting shows it was introduced with below commit:
>
> commit 8e141f9eb803e209714a80aa6ec073893f94c526
> Author: Christoph Hellwig <hch@lst.de>
> Date: Wed Sep 29 09:12:40 2021 +0200
>
> block: drain file system I/O on del_gendisk
I can reproduce this, and it seems due to the fact that the pmem
driver overloads q_usage_counter for it's purposes (pgmap refcounting).
Let me think a little more about what we can do here.
prev parent reply other threads:[~2021-10-18 17:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAHj4cs87BapQJcV0a=M6=dc9PrsGH6qzqJEt9fbjLK1aShnMPg@mail.gmail.com>
2021-10-18 11:16 ` Fwd: [regression] ndctl destroy-namespace operation hang from 5.15.0-rc6 Yi Zhang
2021-10-18 16:13 ` Yi Zhang
2021-10-18 17:07 ` Christoph Hellwig [this message]
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