nvme-pci: align io queue count with allocted nvme_queue in nvme_probe
Since commit 147b27e4 ("nvme-pci: allocate device queues storage space at probe"), nvme_alloc_queue does not alloc the nvme queues itself anymore. If the write/poll_queues module parameters are changed at runtime to values larger than the number of allocated queues in nvme_probe, nvme_alloc_queue will access unallocated memory. Add a new nr_allocated_queues member to struct nvme_dev to record how many queues were alloctated in nvme_probe to avoid using more than the allocated queues after a reset following a change to the write/poll_queues module parameters. Also add nr_write_queues and nr_poll_queues members to allow refreshing the number of write and poll queues based on a change to the module parameters when resetting the controller. Fixes: 147b27e4 ("nvme-pci: allocate device queues storage space at probe") Signed-off-by:Weiping Zhang <zhangweiping@didiglobal.com> Reviewed-by:
Keith Busch <kbusch@kernel.org> Reviewed-by:
Max Gurtovoy <maxg@mellanox.com> [hch: add nvme_max_io_queues, update the commit message] Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
parent
54b2fcee
Please register or sign in to comment