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| author | Christoph Hellwig <hch@lst.de> | 2021-06-02 09:53:16 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-06-11 20:53:02 +0300 |
| commit | cdb14e0f7775e767484843e8ecd736bb21754c58 (patch) | |
| tree | 1656af72f79a9b9532fbed8fe3cf9af3f4648b5a /block/blk-mq.c | |
| parent | a624eb520390cecf644a8906c982fd53b2afcc49 (diff) | |
| download | linux-cdb14e0f7775e767484843e8ecd736bb21754c58.tar.xz | |
blk-mq: factor out a blk_mq_alloc_sq_tag_set helper
Factour out a helper to initialize a simple single hw queue tag_set from
blk_mq_init_sq_queue. This will allow to phase out blk_mq_init_sq_queue
in favor of a more symmetric and general API.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210602065345.355274-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 4261adee9964..867e5faf4f5b 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3152,24 +3152,12 @@ struct request_queue *blk_mq_init_sq_queue(struct blk_mq_tag_set *set, struct request_queue *q; int ret; - memset(set, 0, sizeof(*set)); - set->ops = ops; - set->nr_hw_queues = 1; - set->nr_maps = 1; - set->queue_depth = queue_depth; - set->numa_node = NUMA_NO_NODE; - set->flags = set_flags; - - ret = blk_mq_alloc_tag_set(set); + ret = blk_mq_alloc_sq_tag_set(set, ops, queue_depth, set_flags); if (ret) return ERR_PTR(ret); - q = blk_mq_init_queue(set); - if (IS_ERR(q)) { + if (IS_ERR(q)) blk_mq_free_tag_set(set); - return q; - } - return q; } EXPORT_SYMBOL(blk_mq_init_sq_queue); @@ -3589,6 +3577,22 @@ out_free_mq_map: } EXPORT_SYMBOL(blk_mq_alloc_tag_set); +/* allocate and initialize a tagset for a simple single-queue device */ +int blk_mq_alloc_sq_tag_set(struct blk_mq_tag_set *set, + const struct blk_mq_ops *ops, unsigned int queue_depth, + unsigned int set_flags) +{ + memset(set, 0, sizeof(*set)); + set->ops = ops; + set->nr_hw_queues = 1; + set->nr_maps = 1; + set->queue_depth = queue_depth; + set->numa_node = NUMA_NO_NODE; + set->flags = set_flags; + return blk_mq_alloc_tag_set(set); +} +EXPORT_SYMBOL_GPL(blk_mq_alloc_sq_tag_set); + void blk_mq_free_tag_set(struct blk_mq_tag_set *set) { int i, j; |