Hi Jens, The zone write plug lock is taken in the submission and in the completion path. Hence, it is important that this lock is held no longer than needed. This patch series reduces how long the zone write plug lock is held. Please consider this patch series for the next merge window. Thanks, Bart. Bart Van Assche (3): blk-zoned: Move locking into disk_zone_wplug_set_wp_offset() blk-zoned: Move locking into disk_zone_wplug_abort() blk-zoned: Do not lock zwplug->lock recursively block/blk-zoned.c | 56 +++++++++++++++++++++++++---------------------- 1 file changed, 30 insertions(+), 26 deletions(-)