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block: genhd: add 'groups' argument to device_add_disk

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Update device_add_disk() to take an 'groups' argument so that
individual drivers can register a device with additional sysfs
attributes.
This avoids race condition the driver would otherwise have if these
groups were to be created with sysfs_add_groups().

Signed-off-by: Martin Wilck <martin.wilck@suse.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Hannes Reinecke 2018-09-28 08:17:19 +02:00 • committed by Jens Axboe
parent 6c3b7af1c9
commit fef912bf86
28 changed files with 43 additions and 33 deletions
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5
include/linux/genhd.h
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@ -399,10 +399,11 @@ static inline void free_part_info(struct hd_struct *part)
extern void part_round_stats(struct request_queue *q, int cpu, struct hd_struct *part);
/* block/genhd.c */
extern void device_add_disk(struct device *parent, struct gendisk *disk);
extern void device_add_disk(struct device *parent, struct gendisk *disk,
const struct attribute_group **groups);
static inline void add_disk(struct gendisk *disk)
{
device_add_disk(NULL, disk);
device_add_disk(NULL, disk, NULL);
}
extern void device_add_disk_no_queue_reg(struct device *parent, struct gendisk *disk);
static inline void add_disk_no_queue_reg(struct gendisk *disk)