blk-mq: add helper allocating tagset->tags
tagset->set is allocated from blk_mq_alloc_tag_set() rather than being reallocated. This patch added a helper to make its meaning explicitly which is to allocate rather than to reallocate. Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -3382,6 +3382,12 @@ static int blk_mq_realloc_tag_set_tags(struct blk_mq_tag_set *set,
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return 0;
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}
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static int blk_mq_alloc_tag_set_tags(struct blk_mq_tag_set *set,
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int new_nr_hw_queues)
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{
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return blk_mq_realloc_tag_set_tags(set, 0, new_nr_hw_queues);
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}
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/*
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* Alloc a tag set to be associated with one or more request queues.
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* May fail with EINVAL for various error conditions. May adjust the
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@ -3435,7 +3441,7 @@ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set)
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if (set->nr_maps == 1 && set->nr_hw_queues > nr_cpu_ids)
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set->nr_hw_queues = nr_cpu_ids;
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if (blk_mq_realloc_tag_set_tags(set, 0, set->nr_hw_queues) < 0)
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if (blk_mq_alloc_tag_set_tags(set, set->nr_hw_queues) < 0)
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return -ENOMEM;
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ret = -ENOMEM;
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