diff options
Diffstat (limited to 'include/linux/iocontext.h')
| -rw-r--r-- | include/linux/iocontext.h | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h index d15ca6591f96..ac390a34c0e7 100644 --- a/include/linux/iocontext.h +++ b/include/linux/iocontext.h @@ -14,14 +14,22 @@ struct io_cq { struct request_queue *q; struct io_context *ioc; - struct list_head q_node; - struct hlist_node ioc_node; + /* + * q_node and ioc_node link io_cq through icq_list of q and ioc + * respectively. Both fields are unused once ioc_exit_icq() is + * called and shared with __rcu_icq_cache and __rcu_head which are + * used for RCU free of io_cq. + */ + union { + struct list_head q_node; + struct kmem_cache *__rcu_icq_cache; + }; + union { + struct hlist_node ioc_node; + struct rcu_head __rcu_head; + }; unsigned long changed; - struct rcu_head rcu_head; - - void (*exit)(struct io_cq *); - void (*release)(struct io_cq *); }; /* |