diff options
| -rw-r--r-- | block/blk-mq.c | 20 | ||||
| -rw-r--r-- | include/linux/blk-mq.h | 2 |
2 files changed, 22 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index aae9a112c913..770276815507 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -197,6 +197,26 @@ void blk_mq_unfreeze_queue(struct request_queue *q) EXPORT_SYMBOL_GPL(blk_mq_unfreeze_queue); /* + * non_owner variant of blk_freeze_queue_start + * + * Unlike blk_freeze_queue_start, the queue doesn't need to be unfrozen + * by the same task. This is fragile and should not be used if at all + * possible. + */ +void blk_freeze_queue_start_non_owner(struct request_queue *q) +{ + blk_freeze_queue_start(q); +} +EXPORT_SYMBOL_GPL(blk_freeze_queue_start_non_owner); + +/* non_owner variant of blk_mq_unfreeze_queue */ +void blk_mq_unfreeze_queue_non_owner(struct request_queue *q) +{ + __blk_mq_unfreeze_queue(q, false); +} +EXPORT_SYMBOL_GPL(blk_mq_unfreeze_queue_non_owner); + +/* * FIXME: replace the scsi_internal_device_*block_nowait() calls in the * mpt3sas driver such that this function can be removed. */ diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 59e9adf815a4..2035fad3131f 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -919,6 +919,8 @@ void blk_freeze_queue_start(struct request_queue *q); void blk_mq_freeze_queue_wait(struct request_queue *q); int blk_mq_freeze_queue_wait_timeout(struct request_queue *q, unsigned long timeout); +void blk_mq_unfreeze_queue_non_owner(struct request_queue *q); +void blk_freeze_queue_start_non_owner(struct request_queue *q); void blk_mq_map_queues(struct blk_mq_queue_map *qmap); void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues); |