Maurizio Lombardi 37953cec77
nvme: fix race condition between connected uevent and STARTED_ONCE flag ...
When a controller connects, nvme_start_ctrl() emits the
"NVME_EVENT=connected" uevent and sets the NVME_CTRL_STARTED_ONCE flag.
Currently, the uevent is emitted before the flag is set. This creates a
race condition for userspace tools (like udev rules) that might rely on
the "connected" event to configure other attributes.
Swap the order of operations in nvme_start_ctrl() so that the
NVME_CTRL_STARTED_ONCE flag is set before the uevent is sent. This
guarantees that the admin_timeout can already be changed when userspace
is notified.
Reviewed-by: Sagi Grimberg <sagi@grimberg.me >
Reviewed-by: Hannes Reinecke <hare@kernel.org >
Reviewed-by: Christoph Hellwig <hch@lst.de >
Reviewed-by: Daniel Wagner <dwagner@suse.de >
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com >
Signed-off-by: Keith Busch <kbusch@kernel.org >
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37953cec77