Re: [PATCH v6 1/4] block: add blk_mq_is_queue_frozen()
- From
- Christoph Hellwig <hch@infradead.org>
- Date
- 2021-03-09 17:21:05
- Also in
- dm-devel, linux-api, linux-block, lkml
- Reply to
- Sergei Shtepa, 2021-03-03
On Wed, Mar 03, 2021 at 03:30:15PM +0300, Sergei Shtepa wrote:
quoted hunk ↗ jump to hunk
+bool blk_mq_is_queue_frozen(struct request_queue *q) +{ + bool ret; + + mutex_lock(&q->mq_freeze_lock); + ret = percpu_ref_is_dying(&q->q_usage_counter) && percpu_ref_is_zero(&q->q_usage_counter);
Please avoid the overly long line.
Also maybe frozen is a better name for the variable currently called
ret?