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blkdev: make struct block_device_operations.devnode() take a const * 

The devnode() callback in struct block_device_operations should not be
modifying the device that is passed into it, so mark it as a const * and
propagate the function signature changes out into the one subsystem that
actually uses this callback.

Acked-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20221109144843.679668-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2022-11-09 15:48:43 +01:00
parent fa627348cf
commit be7e8b917e
2 changed files with 2 additions and 2 deletions
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2
drivers/block/pktcdvd.c
View File

@ -2632,7 +2632,7 @@ static unsigned int pkt_check_events(struct gendisk *disk,
return attached_disk->fops->check_events(attached_disk, clearing); return attached_disk->fops->check_events(attached_disk, clearing);
} }
static char *pkt_devnode(struct gendisk *disk, umode_t *mode) static char *pkt_devnode(const struct gendisk *disk, umode_t *mode)
{ {
return kasprintf(GFP_KERNEL, "pktcdvd/%s", disk->disk_name); return kasprintf(GFP_KERNEL, "pktcdvd/%s", disk->disk_name);
} }

2
include/linux/blkdev.h
View File

@ -1413,7 +1413,7 @@ struct block_device_operations {
void (*swap_slot_free_notify) (struct block_device *, unsigned long); void (*swap_slot_free_notify) (struct block_device *, unsigned long);
int (*report_zones)(struct gendisk *, sector_t sector, int (*report_zones)(struct gendisk *, sector_t sector,
unsigned int nr_zones, report_zones_cb cb, void *data); unsigned int nr_zones, report_zones_cb cb, void *data);
char *(*devnode)(struct gendisk *disk, umode_t *mode); char *(*devnode)(const struct gendisk *disk, umode_t *mode);
/* returns the length of the identifier or a negative errno: */ /* returns the length of the identifier or a negative errno: */
int (*get_unique_id)(struct gendisk *disk, u8 id[16], int (*get_unique_id)(struct gendisk *disk, u8 id[16],
enum blk_unique_id id_type); enum blk_unique_id id_type);