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Commit 64c4bc4d authored by Kent Overstreet's avatar Kent Overstreet Committed by Jens Axboe
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pktcdvd: convert to bioset_init()/mempool_init() 



Convert pktcdvd to embedded bio sets.

Signed-off-by: default avatarKent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 0892fac8

drivers/block/pktcdvd.c

+25 −25
Original line number Diff line number Diff line
@@ -97,8 +97,8 @@ static int pktdev_major; 
static int write_congestion_on  = PKT_WRITE_CONGESTION_ON;

static int write_congestion_off = PKT_WRITE_CONGESTION_OFF;

static struct mutex ctl_mutex;	/* Serialize open/close/setup/teardown */

static mempool_t *psd_pool;

static struct bio_set *pkt_bio_set;

static mempool_t psd_pool;

static struct bio_set pkt_bio_set;



static struct class	*class_pktcdvd = NULL;    /* /sys/class/pktcdvd */

static struct dentry	*pkt_debugfs_root = NULL; /* /sys/kernel/debug/pktcdvd */
@@ -631,7 +631,7 @@ static inline struct pkt_rb_node *pkt_rbtree_next(struct pkt_rb_node *node) 
static void pkt_rbtree_erase(struct pktcdvd_device *pd, struct pkt_rb_node *node)

{

	rb_erase(&node->rb_node, &pd->bio_queue);

	mempool_free(node, pd->rb_pool);

	mempool_free(node, &pd->rb_pool);

	pd->bio_queue_size--;

	BUG_ON(pd->bio_queue_size < 0);

}
@@ -2303,14 +2303,14 @@ static void pkt_end_io_read_cloned(struct bio *bio) 
	psd->bio->bi_status = bio->bi_status;

	bio_put(bio);

	bio_endio(psd->bio);

	mempool_free(psd, psd_pool);

	mempool_free(psd, &psd_pool);

	pkt_bio_finished(pd);

}



static void pkt_make_request_read(struct pktcdvd_device *pd, struct bio *bio)

{

	struct bio *cloned_bio = bio_clone_fast(bio, GFP_NOIO, pkt_bio_set);

	struct packet_stacked_data *psd = mempool_alloc(psd_pool, GFP_NOIO);

	struct bio *cloned_bio = bio_clone_fast(bio, GFP_NOIO, &pkt_bio_set);

	struct packet_stacked_data *psd = mempool_alloc(&psd_pool, GFP_NOIO);



	psd->pd = pd;

	psd->bio = bio;
@@ -2381,7 +2381,7 @@ static void pkt_make_request_write(struct request_queue *q, struct bio *bio) 
	/*

	 * No matching packet found. Store the bio in the work queue.

	 */

	node = mempool_alloc(pd->rb_pool, GFP_NOIO);

	node = mempool_alloc(&pd->rb_pool, GFP_NOIO);

	node->bio = bio;

	spin_lock(&pd->lock);

	BUG_ON(pd->bio_queue_size < 0);
@@ -2451,7 +2451,7 @@ static blk_qc_t pkt_make_request(struct request_queue *q, struct bio *bio) 


			split = bio_split(bio, last_zone -

					  bio->bi_iter.bi_sector,

					  GFP_NOIO, pkt_bio_set);

					  GFP_NOIO, &pkt_bio_set);

			bio_chain(split, bio);

		} else {

			split = bio;
@@ -2707,9 +2707,9 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev) 
	if (!pd)

		goto out_mutex;



	pd->rb_pool = mempool_create_kmalloc_pool(PKT_RB_POOL_SIZE,

	ret = mempool_init_kmalloc_pool(&pd->rb_pool, PKT_RB_POOL_SIZE,

					sizeof(struct pkt_rb_node));

	if (!pd->rb_pool)

	if (ret)

		goto out_mem;



	INIT_LIST_HEAD(&pd->cdrw.pkt_free_list);
@@ -2766,7 +2766,7 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev) 
out_mem2:

	put_disk(disk);

out_mem:

	mempool_destroy(pd->rb_pool);

	mempool_exit(&pd->rb_pool);

	kfree(pd);

out_mutex:

	mutex_unlock(&ctl_mutex);
@@ -2817,7 +2817,7 @@ static int pkt_remove_dev(dev_t pkt_dev) 
	blk_cleanup_queue(pd->disk->queue);

	put_disk(pd->disk);



	mempool_destroy(pd->rb_pool);

	mempool_exit(&pd->rb_pool);

	kfree(pd);



	/* This is safe: open() is still holding a reference. */
@@ -2914,14 +2914,14 @@ static int __init pkt_init(void) 


	mutex_init(&ctl_mutex);



	psd_pool = mempool_create_kmalloc_pool(PSD_POOL_SIZE,

	ret = mempool_init_kmalloc_pool(&psd_pool, PSD_POOL_SIZE,

				    sizeof(struct packet_stacked_data));

	if (!psd_pool)

		return -ENOMEM;

	pkt_bio_set = bioset_create(BIO_POOL_SIZE, 0, 0);

	if (!pkt_bio_set) {

		mempool_destroy(psd_pool);

		return -ENOMEM;

	if (ret)

		return ret;

	ret = bioset_init(&pkt_bio_set, BIO_POOL_SIZE, 0, 0);

	if (ret) {

		mempool_exit(&psd_pool);

		return ret;

	}



	ret = register_blkdev(pktdev_major, DRIVER_NAME);
@@ -2954,8 +2954,8 @@ static int __init pkt_init(void) 
out:

	unregister_blkdev(pktdev_major, DRIVER_NAME);

out2:

	mempool_destroy(psd_pool);

	bioset_free(pkt_bio_set);

	mempool_exit(&psd_pool);

	bioset_exit(&pkt_bio_set);

	return ret;

}
@@ -2968,8 +2968,8 @@ static void __exit pkt_exit(void) 
	pkt_sysfs_cleanup();



	unregister_blkdev(pktdev_major, DRIVER_NAME);

	mempool_destroy(psd_pool);

	bioset_free(pkt_bio_set);

	mempool_exit(&psd_pool);

	bioset_exit(&pkt_bio_set);

}



MODULE_DESCRIPTION("Packet writing layer for CD/DVD drives");

include/linux/pktcdvd.h

+1 −1
Original line number Diff line number Diff line
@@ -186,7 +186,7 @@ struct pktcdvd_device 
	sector_t		current_sector;	/* Keep track of where the elevator is */

	atomic_t		scan_queue;	/* Set to non-zero when pkt_handle_queue */

						/* needs to be run. */

	mempool_t		*rb_pool;	/* mempool for pkt_rb_node allocations */

	mempool_t		rb_pool;	/* mempool for pkt_rb_node allocations */



	struct packet_iosched   iosched;

	struct gendisk		*disk;