[PATCH v2 09/34] pktcdvd: port block device access to file

Christian Brauner
2024-01-23T13:27:21Z

Signed-off-by: Christian Brauner <brauner@kernel.org>
---
drivers/block/pktcdvd.c | 68 ++++++++++++++++++++++++-------------------------
include/linux/pktcdvd.h | 4 +--
2 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index d56d972aadb3..c21444716e43 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -340,8 +340,8 @@ static ssize_t device_map_show(const struct class *c, const struct class_attribu
n += sysfs_emit_at(data, n, "%s %u:%u %u:%u\n",
pd->disk->disk_name,
MAJOR(pd->pkt_dev), MINOR(pd->pkt_dev),
- MAJOR(pd->bdev_handle->bdev->bd_dev),
- MINOR(pd->bdev_handle->bdev->bd_dev));
+ MAJOR(file_bdev(pd->bdev_file)->bd_dev),
+ MINOR(file_bdev(pd->bdev_file)->bd_dev));
}
mutex_unlock(&ctl_mutex);
return n;
@@ -438,7 +438,7 @@ static int pkt_seq_show(struct seq_file *m, void *p)
int states[PACKET_NUM_STATES];

seq_printf(m, "Writer %s mapped to %pg:\n", pd->disk->disk_name,
- pd->bdev_handle->bdev);
+ file_bdev(pd->bdev_file));

seq_printf(m, "\nSettings:\n");
seq_printf(m, "\tpacket size:\t\t%dkB\n", pd->settings.size / 2);
@@ -715,7 +715,7 @@ static void pkt_rbtree_insert(struct pktcdvd_device *pd, struct pkt_rb_node *nod
*/
static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *cgc)
{
- struct request_queue *q = bdev_get_queue(pd->bdev_handle->bdev);
+ struct request_queue *q = bdev_get_queue(file_bdev(pd->bdev_file));
struct scsi_cmnd *scmd;
struct request *rq;
int ret = 0;
@@ -1048,7 +1048,7 @@ static void pkt_gather_data(struct pktcdvd_device *pd, struct packet_data *pkt)
continue;

bio = pkt->r_bios[f];
- bio_init(bio, pd->bdev_handle->bdev, bio->bi_inline_vecs, 1,
+ bio_init(bio, file_bdev(pd->bdev_file), bio->bi_inline_vecs, 1,
REQ_OP_READ);
bio->bi_iter.bi_sector = pkt->sector + f * (CD_FRAMESIZE >> 9);
bio->bi_end_io = pkt_end_io_read;
@@ -1264,7 +1264,7 @@ static void pkt_start_write(struct pktcdvd_device *pd, struct packet_data *pkt)
struct device *ddev = disk_to_dev(pd->disk);
int f;

- bio_init(pkt->w_bio, pd->bdev_handle->bdev, pkt->w_bio->bi_inline_vecs,
+ bio_init(pkt->w_bio, file_bdev(pd->bdev_file), pkt->w_bio->bi_inline_vecs,
pkt->frames, REQ_OP_WRITE);
pkt->w_bio->bi_iter.bi_sector = pkt->sector;
pkt->w_bio->bi_end_io = pkt_end_io_packet_write;
@@ -2162,20 +2162,20 @@ static int pkt_open_dev(struct pktcdvd_device *pd, bool write)
int ret;
long lba;
struct request_queue *q;
- struct bdev_handle *bdev_handle;
+ struct file *bdev_file;

/*
* We need to re-open the cdrom device without O_NONBLOCK to be able
* to read/write from/to it. It is already opened in O_NONBLOCK mode
* so open should not fail.
*/
- bdev_handle = bdev_open_by_dev(pd->bdev_handle->bdev->bd_dev,
+ bdev_file = bdev_file_open_by_dev(file_bdev(pd->bdev_file)->bd_dev,
BLK_OPEN_READ, pd, NULL);
- if (IS_ERR(bdev_handle)) {
- ret = PTR_ERR(bdev_handle);
+ if (IS_ERR(bdev_file)) {
+ ret = PTR_ERR(bdev_file);
goto out;
}
- pd->open_bdev_handle = bdev_handle;
+ pd->f_open_bdev = bdev_file;

ret = pkt_get_last_written(pd, &lba);
if (ret) {
@@ -2184,9 +2184,9 @@ static int pkt_open_dev(struct pktcdvd_device *pd, bool write)
}

set_capacity(pd->disk, lba << 2);
- set_capacity_and_notify(pd->bdev_handle->bdev->bd_disk, lba << 2);
+ set_capacity_and_notify(file_bdev(pd->bdev_file)->bd_disk, lba << 2);

- q = bdev_get_queue(pd->bdev_handle->bdev);
+ q = bdev_get_queue(file_bdev(pd->bdev_file));
if (write) {
ret = pkt_open_write(pd);
if (ret)
@@ -2218,7 +2218,7 @@ static int pkt_open_dev(struct pktcdvd_device *pd, bool write)
return 0;

out_putdev:
- bdev_release(bdev_handle);
+ fput(bdev_file);
out:
return ret;
}
@@ -2237,8 +2237,8 @@ static void pkt_release_dev(struct pktcdvd_device *pd, int flush)
pkt_lock_door(pd, 0);

pkt_set_speed(pd, MAX_SPEED, MAX_SPEED);
- bdev_release(pd->open_bdev_handle);
- pd->open_bdev_handle = NULL;
+ fput(pd->f_open_bdev);
+ pd->f_open_bdev = NULL;

pkt_shrink_pktlist(pd);
}
@@ -2326,7 +2326,7 @@ static void pkt_end_io_read_cloned(struct bio *bio)

static void pkt_make_request_read(struct pktcdvd_device *pd, struct bio *bio)
{
- struct bio *cloned_bio = bio_alloc_clone(pd->bdev_handle->bdev, bio,
+ struct bio *cloned_bio = bio_alloc_clone(file_bdev(pd->bdev_file), bio,
GFP_NOIO, &pkt_bio_set);
struct packet_stacked_data *psd = mempool_alloc(&psd_pool, GFP_NOIO);

@@ -2497,7 +2497,7 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
{
struct device *ddev = disk_to_dev(pd->disk);
int i;
- struct bdev_handle *bdev_handle;
+ struct file *bdev_file;
struct scsi_device *sdev;

if (pd->pkt_dev == dev) {
@@ -2508,9 +2508,9 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
struct pktcdvd_device *pd2 = pkt_devs[i];
if (!pd2)
continue;
- if (pd2->bdev_handle->bdev->bd_dev == dev) {
+ if (file_bdev(pd2->bdev_file)->bd_dev == dev) {
dev_err(ddev, "%pg already setup\n",
- pd2->bdev_handle->bdev);
+ file_bdev(pd2->bdev_file));
return -EBUSY;
}
if (pd2->pkt_dev == dev) {
@@ -2519,13 +2519,13 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
}
}

- bdev_handle = bdev_open_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_NDELAY,
+ bdev_file = bdev_file_open_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_NDELAY,
NULL, NULL);
- if (IS_ERR(bdev_handle))
- return PTR_ERR(bdev_handle);
- sdev = scsi_device_from_queue(bdev_handle->bdev->bd_disk->queue);
+ if (IS_ERR(bdev_file))
+ return PTR_ERR(bdev_file);
+ sdev = scsi_device_from_queue(file_bdev(bdev_file)->bd_disk->queue);
if (!sdev) {
- bdev_release(bdev_handle);
+ fput(bdev_file);
return -EINVAL;
}
put_device(&sdev->sdev_gendev);
@@ -2533,8 +2533,8 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
/* This is safe, since we have a reference from open(). */
__module_get(THIS_MODULE);

- pd->bdev_handle = bdev_handle;
- set_blocksize(bdev_handle->bdev, CD_FRAMESIZE);
+ pd->bdev_file = bdev_file;
+ set_blocksize(file_bdev(bdev_file), CD_FRAMESIZE);

pkt_init_queue(pd);

@@ -2546,11 +2546,11 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
}

proc_create_single_data(pd->disk->disk_name, 0, pkt_proc, pkt_seq_show, pd);
- dev_notice(ddev, "writer mapped to %pg\n", bdev_handle->bdev);
+ dev_notice(ddev, "writer mapped to %pg\n", file_bdev(bdev_file));
return 0;

out_mem:
- bdev_release(bdev_handle);
+ fput(bdev_file);
/* This is safe: open() is still holding a reference. */
module_put(THIS_MODULE);
return -ENOMEM;
@@ -2605,9 +2605,9 @@ static unsigned int pkt_check_events(struct gendisk *disk,

if (!pd)
return 0;
- if (!pd->bdev_handle)
+ if (!pd->bdev_file)
return 0;
- attached_disk = pd->bdev_handle->bdev->bd_disk;
+ attached_disk = file_bdev(pd->bdev_file)->bd_disk;
if (!attached_disk || !attached_disk->fops->check_events)
return 0;
return attached_disk->fops->check_events(attached_disk, clearing);
@@ -2692,7 +2692,7 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
goto out_mem2;

/* inherit events of the host device */
- disk->events = pd->bdev_handle->bdev->bd_disk->events;
+ disk->events = file_bdev(pd->bdev_file)->bd_disk->events;

ret = add_disk(disk);
if (ret)
@@ -2757,7 +2757,7 @@ static int pkt_remove_dev(dev_t pkt_dev)
pkt_debugfs_dev_remove(pd);
pkt_sysfs_dev_remove(pd);

- bdev_release(pd->bdev_handle);
+ fput(pd->bdev_file);

remove_proc_entry(pd->disk->disk_name, pkt_proc);
dev_notice(ddev, "writer unmapped\n");
@@ -2784,7 +2784,7 @@ static void pkt_get_status(struct pkt_ctrl_command *ctrl_cmd)

pd = pkt_find_dev_from_minor(ctrl_cmd->dev_index);
if (pd) {
- ctrl_cmd->dev = new_encode_dev(pd->bdev_handle->bdev->bd_dev);
+ ctrl_cmd->dev = new_encode_dev(file_bdev(pd->bdev_file)->bd_dev);
ctrl_cmd->pkt_dev = new_encode_dev(pd->pkt_dev);
} else {
ctrl_cmd->dev = 0;
diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h
index 79594aeb160d..2f1b952d596a 100644
--- a/include/linux/pktcdvd.h
+++ b/include/linux/pktcdvd.h
@@ -154,9 +154,9 @@ struct packet_stacked_data

struct pktcdvd_device
{
- struct bdev_handle *bdev_handle; /* dev attached */
+ struct file *bdev_file; /* dev attached */
/* handle acquired for bdev during pkt_open_dev() */
- struct bdev_handle *open_bdev_handle;
+ struct file *f_open_bdev;
dev_t pkt_dev; /* our dev */
struct packet_settings settings;
struct packet_stats stats;

--
2.43.0