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block: move the ->devnode callback to struct block_device_operations 

There really isn't any good reason to stash a method directly into
struct gendisk.  Move it together with the other block device
operations.

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 09:07:17 +01:00 committed by Jens Axboe
parent c6a564ffad
commit 348e114bbd
4 changed files with 9 additions and 9 deletions
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4
block/genhd.c
View File

@ -1497,8 +1497,8 @@ static char *block_devnode(struct device *dev, umode_t *mode,
{
struct gendisk *disk = dev_to_disk(dev);
if (disk->devnode)
return disk->devnode(disk, mode);
if (disk->fops->devnode)
return disk->fops->devnode(disk, mode);
return NULL;
}

12
drivers/block/pktcdvd.c
View File

@ -2679,6 +2679,11 @@ static unsigned int pkt_check_events(struct gendisk *disk,
return attached_disk->fops->check_events(attached_disk, clearing);
}
static char *pkt_devnode(struct gendisk *disk, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "pktcdvd/%s", disk->disk_name);
}
static const struct block_device_operations pktcdvd_ops = {
.owner = THIS_MODULE,
.open = pkt_open,
@ -2686,13 +2691,9 @@ static const struct block_device_operations pktcdvd_ops = {
.ioctl = pkt_ioctl,
.compat_ioctl = blkdev_compat_ptr_ioctl,
.check_events = pkt_check_events,
.devnode = pkt_devnode,
};
static char *pktcdvd_devnode(struct gendisk *gd, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "pktcdvd/%s", gd->disk_name);
}
/*
* Set up mapping from pktcdvd device to CD-ROM device.
*/
@ -2748,7 +2749,6 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
disk->fops = &pktcdvd_ops;
disk->flags = GENHD_FL_REMOVABLE;
strcpy(disk->disk_name, pd->name);
disk->devnode = pktcdvd_devnode;
disk->private_data = pd;
disk->queue = blk_alloc_queue(GFP_KERNEL);
if (!disk->queue)

1
include/linux/blkdev.h
View File

@ -1697,6 +1697,7 @@ struct block_device_operations {
void (*swap_slot_free_notify) (struct block_device *, unsigned long);
int (*report_zones)(struct gendisk *, sector_t sector,
unsigned int nr_zones, report_zones_cb cb, void *data);
char *(*devnode)(struct gendisk *disk, umode_t *mode);
struct module *owner;
const struct pr_ops *pr_ops;
};

1
include/linux/genhd.h
View File

@ -191,7 +191,6 @@ struct gendisk {
* disks that can't be partitioned. */
char disk_name[DISK_NAME_LEN]; /* name of major driver */
char *(*devnode)(struct gendisk *gd, umode_t *mode);
unsigned short events; /* supported events */
unsigned short event_flags; /* flags related to event processing */