1 files changed, 27 insertions, 0 deletions

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index f924f459bdb8..af0cb4b9e784 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -297,6 +297,25 @@ struct kobj_type ktype_part = {
         .sysfs_ops      = &part_sysfs_ops,
 };
 
+static inline void partition_sysfs_add_subdir(struct hd_struct *p)
+{
+        struct kobject *k;
+
+        k = kobject_get(&p->kobj);
+        p->holder_dir = kobject_add_dir(k, "holders");
+        kobject_put(k);
+}
+
+static inline void disk_sysfs_add_subdirs(struct gendisk *disk)
+{
+        struct kobject *k;
+
+        k = kobject_get(&disk->kobj);
+        disk->holder_dir = kobject_add_dir(k, "holders");
+        disk->slave_dir = kobject_add_dir(k, "slaves");
+        kobject_put(k);
+}
+
 void delete_partition(struct gendisk *disk, int part)
 {
         struct hd_struct *p = disk->part[part-1];
@@ -310,6 +329,8 @@ void delete_partition(struct gendisk *disk, int part)
         p->ios[0] = p->ios[1] = 0;
         p->sectors[0] = p->sectors[1] = 0;
         devfs_remove("%s/part%d", disk->devfs_name, part);
+        if (p->holder_dir)
+                kobject_unregister(p->holder_dir);
         kobject_unregister(&p->kobj);
 }
 
@@ -337,6 +358,7 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len)
         p->kobj.parent = &disk->kobj;
         p->kobj.ktype = &ktype_part;
         kobject_register(&p->kobj);
+        partition_sysfs_add_subdir(p);
         disk->part[part-1] = p;
 }
 
@@ -383,6 +405,7 @@ void register_disk(struct gendisk *disk)
         if ((err = kobject_add(&disk->kobj)))
                 return;
         disk_sysfs_symlinks(disk);
+        disk_sysfs_add_subdirs(disk);
         kobject_uevent(&disk->kobj, KOBJ_ADD);
 
         /* No minors to use for partitions */
@@ -483,6 +506,10 @@ void del_gendisk(struct gendisk *disk)
 
         devfs_remove_disk(disk);
 
+        if (disk->holder_dir)
+                kobject_unregister(disk->holder_dir);
+        if (disk->slave_dir)
+                kobject_unregister(disk->slave_dir);
         if (disk->driverfs_dev) {
                 char *disk_name = make_block_name(disk);
                 sysfs_remove_link(&disk->kobj, "device");