From: Dan Williams <dan.j.williams@intel.com>
To: Adam Borowski <kilobyte@angband.pl>
Cc: linux-nvdimm <linux-nvdimm@lists.01.org>
Subject: Re: hang in dax_pmem_compat_release on changing namespace mode
Date: Thu, 19 Sep 2019 08:10:47 -0700 [thread overview]
Message-ID: <CAPcyv4jYE_vmEqe+m7spaXV4FDgHLJpE9cp3Ry2e8vU0JZEFCA@mail.gmail.com> (raw)
In-Reply-To: <20190919115547.GA17963@angband.pl>
On Thu, Sep 19, 2019 at 4:56 AM Adam Borowski <kilobyte@angband.pl> wrote:
>
> Hi!
> If I try to change the mode of a devdax namespace that's in use (mapped by
> some process), ndctl hangs:
Is it merely mapped, or might the pages be actively pinned / in use by
another part of the kernel? The kernel has no choice but to wait for
active page pins to drain. Can you get a stack trace of the process
with the dev-dax instance mapped?
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next prev parent reply other threads:[~2019-09-19 15:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-19 11:55 hang in dax_pmem_compat_release on changing namespace mode Adam Borowski
2019-09-19 15:10 ` Dan Williams [this message]
2019-09-19 15:47 ` Adam Borowski
2019-09-19 15:50 ` Dan Williams
2019-09-19 15:50 ` Adam Borowski
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