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>
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Christoph Hellwig

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149e10f8ff
@@ -259,6 +259,8 @@ void blk_freeze_queue_start(struct request_queue *q);
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void blk_mq_freeze_queue_wait(struct request_queue *q);
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int blk_mq_freeze_queue_wait_timeout(struct request_queue *q,
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unsigned long timeout);
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int blk_mq_tagset_iter(struct blk_mq_tag_set *set, void *data,
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int (reinit_request)(void *, struct request *));
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int blk_mq_reinit_tagset(struct blk_mq_tag_set *set,
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int (reinit_request)(void *, struct request *));
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