nvme: Prevent resets during paused controller state

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A paused controller is doing critical internal activation work in the
background. Prevent subsequent controller resets from occurring during
this period by setting the controller state to RESETTING first. A helper
function, nvme_try_sched_reset_work(), is introduced for these paths so
they may continue with scheduling the reset_work after they've completed
their uninterruptible critical section.

Tested-by: Edmund Nadolski <edmund.nadolski@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>

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This commit is contained in:

Keith Busch 2019-09-06 11:23:08 -06:00

parent 92b98e88d5

commit 4c75f87785

1 changed files with 25 additions and 4 deletions

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drivers/nvme/host/core.c

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