Hi Jens, This patch series reduces the amount of memory required for request queues and also includes a patche that is the result of reviewing code related to the modified code. Please consider these patches for kernel version v5.5. Thanks, Bart. Changes compared to v1: - Dropped the blk_poll() patch from this series. Bart Van Assche (3): block: Remove the synchronize_rcu() call from __blk_mq_update_nr_hw_queues() block: Reduce the amount of memory required per request queue block: Reduce the amount of memory used for tag sets block/blk-mq.c | 75 +++++++++++++++++++++++++++++++------------------- 1 file changed, 47 insertions(+), 28 deletions(-) -- 2.24.0.rc0.303.g954a862665-goog