Linux kernel bug fix: blk-mq, percpu_ref: start q->mq_usage_counter in atomic mode
Subsystem: block (block/blk-mq-sysfs.c)
Bug type: hang, severity: medium
Files changed: block/blk-mq-sysfs.c;block/blk-mq.c;block/blk-sysfs.c;include/linux/blk-mq.h
Introduced by Tejun Heo on 2014-07-01 10:34:38 -0600; fixed by Tejun Heo on 2014-09-24 13:37:21 -0400 (lifetime: 85 days)