diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-06-02 09:53:17 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-06-11 11:53:02 -0600 |
| commit | 26a9750aa875126e4b7fc5ee6de652a529c5b7ee (patch) | |
| tree | 481f3adfb8068b423203091f4298f260c215473c /block | |
| parent | cdb14e0f7775e767484843e8ecd736bb21754c58 (diff) | |
| download | linux-26a9750aa875126e4b7fc5ee6de652a529c5b7ee.tar.gz | |
blk-mq: improve the blk_mq_init_allocated_queue interface
Don't return the passed in request_queue but a normal error code, and drop the elevator_init argument in favor of just calling elevator_init_mq directly from dm-rq. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Link: https://lore.kernel.org/r/20210602065345.355274-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 36 | ||||
| -rw-r--r-- | block/blk.h | 1 | ||||
| -rw-r--r-- | block/elevator.c | 2 |
3 files changed, 15 insertions, 24 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 867e5faf4f5b..8550ad64982f 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3115,21 +3115,18 @@ void blk_mq_release(struct request_queue *q) struct request_queue *blk_mq_init_queue_data(struct blk_mq_tag_set *set, void *queuedata) { - struct request_queue *uninit_q, *q; + struct request_queue *q; + int ret; - uninit_q = blk_alloc_queue(set->numa_node); - if (!uninit_q) + q = blk_alloc_queue(set->numa_node); + if (!q) return ERR_PTR(-ENOMEM); - uninit_q->queuedata = queuedata; - - /* - * Initialize the queue without an elevator. device_add_disk() will do - * the initialization. - */ - q = blk_mq_init_allocated_queue(set, uninit_q, false); - if (IS_ERR(q)) - blk_cleanup_queue(uninit_q); - + q->queuedata = queuedata; + ret = blk_mq_init_allocated_queue(set, q); + if (ret) { + blk_cleanup_queue(q); + return ERR_PTR(ret); + } return q; } EXPORT_SYMBOL_GPL(blk_mq_init_queue_data); @@ -3273,9 +3270,8 @@ static void blk_mq_realloc_hw_ctxs(struct blk_mq_tag_set *set, mutex_unlock(&q->sysfs_lock); } -struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, - struct request_queue *q, - bool elevator_init) +int blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, + struct request_queue *q) { /* mark the queue as mq asap */ q->mq_ops = set->ops; @@ -3325,11 +3321,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, blk_mq_init_cpu_queues(q, set->nr_hw_queues); blk_mq_add_queue_tag_set(set, q); blk_mq_map_swqueue(q); - - if (elevator_init) - elevator_init_mq(q); - - return q; + return 0; err_hctxs: kfree(q->queue_hw_ctx); @@ -3340,7 +3332,7 @@ err_poll: q->poll_cb = NULL; err_exit: q->mq_ops = NULL; - return ERR_PTR(-ENOMEM); + return -ENOMEM; } EXPORT_SYMBOL(blk_mq_init_allocated_queue); diff --git a/block/blk.h b/block/blk.h index 3440142f029b..d3fa47af3607 100644 --- a/block/blk.h +++ b/block/blk.h @@ -192,7 +192,6 @@ void blk_account_io_done(struct request *req, u64 now); void blk_insert_flush(struct request *rq); -void elevator_init_mq(struct request_queue *q); int elevator_switch_mq(struct request_queue *q, struct elevator_type *new_e); void __elevator_exit(struct request_queue *, struct elevator_queue *); diff --git a/block/elevator.c b/block/elevator.c index 440699c28119..06e203426410 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -693,7 +693,7 @@ void elevator_init_mq(struct request_queue *q) elevator_put(e); } } - +EXPORT_SYMBOL_GPL(elevator_init_mq); /* only for dm-rq */ /* * switch to new_e io scheduler. be careful not to introduce deadlocks - |