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Diffstat (limited to 'block/genhd.c')
-rw-r--r--block/genhd.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c
index f4c64c2b303a..c0c7f38c7012 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -992,6 +992,22 @@ static void disk_release(struct device *dev)
free_part_stats(&disk->part0);
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",
};
@@ -1010,6 +1026,7 @@ static struct device_type disk_type = {
.groups = disk_attr_groups,
.release = disk_release,
.nodename = block_nodename,
+ .uevent = disk_uevent,
};
#ifdef CONFIG_PROC_FS