{
struct request_queue *q = NULL;
+ if (cmd->rq)
+ q = cmd->rq->q;
+
switch (queue_mode) {
case NULL_Q_MQ:
blk_mq_end_request(cmd->rq, 0);
break;
case NULL_Q_BIO:
bio_endio(cmd->bio);
- goto free_cmd;
+ break;
}
- if (cmd->rq)
- q = cmd->rq->q;
+ free_cmd(cmd);
/* Restart queue if needed, as we are freeing a tag */
- if (q && !q->mq_ops && blk_queue_stopped(q)) {
+ if (queue_mode == NULL_Q_RQ && blk_queue_stopped(q)) {
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
- if (blk_queue_stopped(q))
- blk_start_queue(q);
+ blk_start_queue_async(q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
-free_cmd:
- free_cmd(cmd);
}
static enum hrtimer_restart null_cmd_timer_expired(struct hrtimer *timer)
blk_put_request(rq);
}
-static int null_lnvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
+static int null_lnvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
{
+ struct request_queue *q = dev->q;
struct request *rq;
struct bio *bio = rqd->bio;
return 0;
}
-static int null_lnvm_id(struct request_queue *q, struct nvm_id *id)
+static int null_lnvm_id(struct nvm_dev *dev, struct nvm_id *id)
{
sector_t size = gb * 1024 * 1024 * 1024ULL;
sector_t blksize;
return 0;
}
-static void *null_lnvm_create_dma_pool(struct request_queue *q, char *name)
+static void *null_lnvm_create_dma_pool(struct nvm_dev *dev, char *name)
{
mempool_t *virtmem_pool;
mempool_destroy(pool);
}
-static void *null_lnvm_dev_dma_alloc(struct request_queue *q, void *pool,
+static void *null_lnvm_dev_dma_alloc(struct nvm_dev *dev, void *pool,
gfp_t mem_flags, dma_addr_t *dma_handler)
{
return mempool_alloc(pool, mem_flags);
static int __init null_init(void)
{
+ int ret = 0;
unsigned int i;
+ struct nullb *nullb;
if (bs > PAGE_SIZE) {
pr_warn("null_blk: invalid block size\n");
0, 0, NULL);
if (!ppa_cache) {
pr_err("null_blk: unable to create ppa cache\n");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err_ppa;
}
}
for (i = 0; i < nr_devices; i++) {
- if (null_add_dev()) {
- unregister_blkdev(null_major, "nullb");
- goto err_ppa;
- }
+ ret = null_add_dev();
+ if (ret)
+ goto err_dev;
}
pr_info("null: module loaded\n");
return 0;
-err_ppa:
+
+err_dev:
+ while (!list_empty(&nullb_list)) {
+ nullb = list_entry(nullb_list.next, struct nullb, list);
+ null_del_dev(nullb);
+ }
kmem_cache_destroy(ppa_cache);
- return -EINVAL;
+err_ppa:
+ unregister_blkdev(null_major, "nullb");
+ return ret;
}
static void __exit null_exit(void)