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block: simplify queue allocation

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Current make_request based drivers use either blk_alloc_queue_node or
blk_alloc_queue to allocate a queue, and then set up the make_request_fn
function pointer and a few parameters using the blk_queue_make_request
helper.  Simplify this by passing the make_request pointer to
blk_alloc_queue, and while at it merge the _node variant into the main
helper by always passing a node_id, and remove the superfluous gfp_mask
parameter.  A lower-level __blk_alloc_queue is kept for the blk-mq case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2020-03-27 09:30:11 +01:00
committed by Jens Axboe
parent ff27668ce8
commit 3d745ea5b0
26 changed files with 54 additions and 108 deletions
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9
drivers/md/dm.c
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@@ -1939,16 +1939,15 @@ static struct mapped_device *alloc_dev(int minor)
INIT_LIST_HEAD(&md->table_devices);
spin_lock_init(&md->uevent_lock);
md->queue = blk_alloc_queue_node(GFP_KERNEL, numa_node_id);
if (!md->queue)
goto bad;
md->queue->queuedata = md;
/*
* default to bio-based required ->make_request_fn until DM
* table is loaded and md->type established. If request-based
* table is loaded: blk-mq will override accordingly.
*/
blk_queue_make_request(md->queue, dm_make_request);
md->queue = blk_alloc_queue(dm_make_request, numa_node_id);
if (!md->queue)
goto bad;
md->queue->queuedata = md;
md->disk = alloc_disk_node(1, md->numa_node_id);
if (!md->disk)