block: introduce blk_mq_tagset_iter
Iterator helper to apply a function on all the
tags in a given tagset. export it as it will be used
outside the block layer later on.
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 50c6485..6bc29f7 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -259,6 +259,8 @@ 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);
+int blk_mq_tagset_iter(struct blk_mq_tag_set *set, void *data,
+ int (reinit_request)(void *, struct request *));
int blk_mq_reinit_tagset(struct blk_mq_tag_set *set,
int (reinit_request)(void *, struct request *));