On 04/22/2017 01:40 AM, Bart Van Assche wrote: > A later patch in this series will modify blk_mq_debugfs_register() > such that it uses q->kobj.parent to determine the name of a > request queue. Hence make sure that that pointer is initialized > before blk_mq_debugfs_register() is called. To avoid lock inversion, > protect sysfs / debugfs registration with the queue sysfs_lock > instead of the global mutex all_q_mutex. > > Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx> > Cc: Omar Sandoval <osandov@xxxxxx> > Cc: Hannes Reinecke <hare@xxxxxxxx> > --- > block/blk-mq-sysfs.c | 35 ++++++++++++++++++++++++++++------- > block/blk-mq.h | 1 + > block/blk-sysfs.c | 6 +++--- > 3 files changed, 32 insertions(+), 10 deletions(-) > Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg)
