On Fri, Apr 21, 2017 at 04:40:17PM -0700, 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.
Reviewed-by: Omar Sandoval <[email protected]> > Signed-off-by: Bart Van Assche <[email protected]> > Cc: Omar Sandoval <[email protected]> > Cc: Hannes Reinecke <[email protected]> > --- > block/blk-mq-sysfs.c | 35 ++++++++++++++++++++++++++++------- > block/blk-mq.h | 1 + > block/blk-sysfs.c | 6 +++--- > 3 files changed, 32 insertions(+), 10 deletions(-)
