Messages in this thread | | | Date | Mon, 5 Jun 2017 10:18:17 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH V2] nvme: fix nvme_remove going to uninterruptible sleep for ever |
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On Sun, Jun 04, 2017 at 06:28:15PM +0300, Sagi Grimberg wrote: > >> 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.
Motly that we can treat a controller as under reset before scheduling the reset work, both to prevent multiple schedules, and to make checks like the one in nvme_should_reset robus.
But I think something along the lines of the earlier patch from Rakesh that just sets the RESETTING state earlier + the cancel_work_sync suggested by you should also work for that purpose. So maybe that's the way to go after all.
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