diff options
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index cdeb5277dfd4..6f612a747810 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1107,6 +1107,22 @@ static void disk_release(struct device *dev) blk_put_queue(disk->queue); kfree(disk); } + +static int disk_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct gendisk *disk = dev_to_disk(dev); + struct disk_part_iter piter; + struct hd_struct *part; + int cnt = 0; + + disk_part_iter_init(&piter, disk, 0); + while((part = disk_part_iter_next(&piter))) + cnt++; + disk_part_iter_exit(&piter); + add_uevent_var(env, "NPARTS=%u", cnt); + return 0; +} + struct class block_class = { .name = "block", }; @@ -1126,6 +1142,7 @@ static struct device_type disk_type = { .groups = disk_attr_groups, .release = disk_release, .devnode = block_devnode, + .uevent = disk_uevent, }; #ifdef CONFIG_PROC_FS |