block: pass a queue_limits argument to blk_alloc_queue
Pass a queue_limits to blk_alloc_queue and apply it after validating and
capping the values using blk_validate_limits. This will allow allocating
queues with valid queue limits instead of setting the values one at a
time later.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240213073425.1621680-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/blk-core.c b/block/blk-core.c
index cb56724..a16b5ab 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -394,24 +394,34 @@ static void blk_timeout_work(struct work_struct *work)
{
}
-struct request_queue *blk_alloc_queue(int node_id)
+struct request_queue *blk_alloc_queue(struct queue_limits *lim, int node_id)
{
struct request_queue *q;
+ int error;
q = kmem_cache_alloc_node(blk_requestq_cachep, GFP_KERNEL | __GFP_ZERO,
node_id);
if (!q)
- return NULL;
+ return ERR_PTR(-ENOMEM);
q->last_merge = NULL;
q->id = ida_alloc(&blk_queue_ida, GFP_KERNEL);
- if (q->id < 0)
+ if (q->id < 0) {
+ error = q->id;
goto fail_q;
+ }
q->stats = blk_alloc_queue_stats();
- if (!q->stats)
+ if (!q->stats) {
+ error = -ENOMEM;
goto fail_id;
+ }
+
+ error = blk_set_default_limits(lim);
+ if (error)
+ goto fail_stats;
+ q->limits = *lim;
q->node = node_id;
@@ -436,12 +446,12 @@ struct request_queue *blk_alloc_queue(int node_id)
* Init percpu_ref in atomic mode so that it's faster to shutdown.
* See blk_register_queue() for details.
*/
- if (percpu_ref_init(&q->q_usage_counter,
+ error = percpu_ref_init(&q->q_usage_counter,
blk_queue_usage_counter_release,
- PERCPU_REF_INIT_ATOMIC, GFP_KERNEL))
+ PERCPU_REF_INIT_ATOMIC, GFP_KERNEL);
+ if (error)
goto fail_stats;
- blk_set_default_limits(&q->limits);
q->nr_requests = BLKDEV_DEFAULT_RQ;
return q;
@@ -452,7 +462,7 @@ struct request_queue *blk_alloc_queue(int node_id)
ida_free(&blk_queue_ida, q->id);
fail_q:
kmem_cache_free(blk_requestq_cachep, q);
- return NULL;
+ return ERR_PTR(error);
}
/**
