diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/blkdev.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1aafeb923e7b..592669bcc536 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -542,7 +542,7 @@ struct request_queue { struct list_head unused_hctx_list; spinlock_t unused_hctx_lock; - atomic_t mq_freeze_depth; + int mq_freeze_depth; #if defined(CONFIG_BLK_DEV_BSG) struct bsg_class_device bsg_dev; @@ -554,6 +554,11 @@ struct request_queue { #endif struct rcu_head rcu_head; wait_queue_head_t mq_freeze_wq; + /* + * Protect concurrent access to q_usage_counter by + * percpu_ref_kill() and percpu_ref_reinit(). + */ + struct mutex mq_freeze_lock; struct percpu_ref q_usage_counter; struct blk_mq_tag_set *tag_set; |