Re: [RFC v2 3/5] blktrace: ref count the request_queue during ioctl

[Bart Van Assche]

On 2020-04-09 14:45, Luis Chamberlain wrote:
> Ensure that the reqest_queue ref counts the request_queue
                  ^^^^^^^^^^^^ ^^^^^^^^^^
                request_queue? refcounts?
> during its full ioctl cycle. This avoids possible races against
> removal, given blk_get_queue() also checks to ensure the queue
> is not dying.
> 
> This small race is possible if you defer removal of the reqest_queue
                                                          ^^^^^^^^^^^^
                                                          request_queue?
> and userspace fires off an ioctl for the device in the meantime.

Anyway:

Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>