nvme: add sysfs attribute to change IO timeout per controller

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Currently, there is no method to adjust the timeout values on a
per controller basis with nvme I/O queues.
Add an io_timeout attribute to nvme so that different nvme controllers
which may have different timeout requirements can have custom I/O
timeouts set.

The I/O timeout is also applied to the connect queue (connect_q).
In NVMe over Fabrics, the connect queue is utilized specifically to
issue Connect commands that establish the I/O queues.

Reviewed-by: Mohamed Khalfella <mkhalfella@purestorage.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>

...

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Maurizio Lombardi 2026-05-14 10:32:52 +02:00 • committed by Keith Busch

parent 61b99f24f0

commit 97960b93d3

3 changed files with 51 additions and 1 deletions

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4

drivers/nvme/host/core.c

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1

drivers/nvme/host/nvme.h

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47

drivers/nvme/host/sysfs.c

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