diff options
Diffstat (limited to 'include/linux/blk-mq.h')
| -rw-r--r-- | include/linux/blk-mq.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index b8de11e0603b..467f1dd21ccf 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -117,6 +117,7 @@ struct blk_mq_queue_data { typedef blk_status_t (queue_rq_fn)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *); +typedef void (commit_rqs_fn)(struct blk_mq_hw_ctx *); /* takes rq->cmd_flags as input, returns a hardware type index */ typedef int (rq_flags_to_type_fn)(struct request_queue *, unsigned int); typedef bool (get_budget_fn)(struct blk_mq_hw_ctx *); @@ -145,6 +146,15 @@ struct blk_mq_ops { queue_rq_fn *queue_rq; /* + * If a driver uses bd->last to judge when to submit requests to + * hardware, it must define this function. In case of errors that + * make us stop issuing further requests, this hook serves the + * purpose of kicking the hardware (which the last request otherwise + * would have done). + */ + commit_rqs_fn *commit_rqs; + + /* * Return a queue map type for the given request/bio flags */ rq_flags_to_type_fn *rq_flags_to_type; |