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| author | Christoph Hellwig <hch@lst.de> | 2020-03-27 09:30:08 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-03-27 10:23:43 -0600 |
| commit | 2f227bb99934a4faa6dfe2cda2594bce8897a323 (patch) | |
| tree | cecb9d1c85abf4a3f4f4f93610e04432202052bc /block/blk-mq.c | |
| parent | 348e114bbd4dce430eae70f01a04c8fc259b4cf1 (diff) | |
| download | lwn-2f227bb99934a4faa6dfe2cda2594bce8897a323.tar.gz lwn-2f227bb99934a4faa6dfe2cda2594bce8897a323.zip | |
block: add a blk_mq_init_queue_data helper
This allows a driver to pass a queuedata member before ->init_hctx is
called. null_blk currently open codes this logic, but I'd rather have
it in the core to ease future maintainance.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <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 | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 745ec592a513..216bf62e88b6 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2724,13 +2724,15 @@ void blk_mq_release(struct request_queue *q) blk_mq_sysfs_deinit(q); } -struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) +struct request_queue *blk_mq_init_queue_data(struct blk_mq_tag_set *set, + void *queuedata) { struct request_queue *uninit_q, *q; uninit_q = blk_alloc_queue_node(GFP_KERNEL, set->numa_node); if (!uninit_q) return ERR_PTR(-ENOMEM); + uninit_q->queuedata = queuedata; /* * Initialize the queue without an elevator. device_add_disk() will do @@ -2742,6 +2744,12 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) return q; } +EXPORT_SYMBOL_GPL(blk_mq_init_queue_data); + +struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) +{ + return blk_mq_init_queue_data(set, NULL); +} EXPORT_SYMBOL(blk_mq_init_queue); /* |