linux-kernel - Re: [PATCH V2] nvme: fix nvme_remove going to uninterruptible sleep for ever

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Message-ID: <bb2780a8-63af-4d58-6c78-b03152de0439@grimberg.me>
Date:   Sun, 4 Jun 2017 18:28:15 +0300
From:   Sagi Grimberg <sagi@...mberg.me>
To:     Christoph Hellwig <hch@....de>, Rakesh Pandit <rakesh@...era.com>
Cc:     linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Jens Axboe <axboe@...com>, Keith Busch <keith.busch@...el.com>,
        Andy Lutomirski <luto@...nel.org>
Subject: Re: [PATCH V2] nvme: fix nvme_remove going to uninterruptible sleep
 for ever


> I think we need the NVME_CTRL_SCHED_RESET state.  In fact I'm pretty
> sure some time in the past I already had it in a local tree as a
> generalization of rdma and loop already use NVME_CTRL_RESETTING
> (they set it before queueing the reset work).

I don't remember having it, but I might be wrong...

Can you explain again why you think we need it? Sorry for being
difficult, but I'm not exactly sure why it makes things better
or simpler.