diff options
| -rw-r--r-- | fs/partitions/check.c | 36 | ||||
| -rw-r--r-- | include/linux/genhd.h | 7 |
2 files changed, 43 insertions, 0 deletions
diff --git a/fs/partitions/check.c b/fs/partitions/check.c index f924f459bdb8..60523cea7136 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -297,6 +297,30 @@ struct kobj_type ktype_part = { .sysfs_ops = &part_sysfs_ops, }; +#ifdef CONFIG_SYSFS +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); +} +#else +#define partition_sysfs_add_subdir(x) do { } while (0) +#define disk_sysfs_add_subdirs(x) do { } while (0) +#endif + void delete_partition(struct gendisk *disk, int part) { struct hd_struct *p = disk->part[part-1]; @@ -310,6 +334,10 @@ 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); +#ifdef CONFIG_SYSFS + if (p->holder_dir) + kobject_unregister(p->holder_dir); +#endif kobject_unregister(&p->kobj); } @@ -337,6 +365,7 @@ 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 +412,7 @@ 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 +513,12 @@ void del_gendisk(struct gendisk *disk) devfs_remove_disk(disk); +#ifdef CONFIG_SYSFS + if (disk->holder_dir) + kobject_unregister(disk->holder_dir); + if (disk->slave_dir) + kobject_unregister(disk->slave_dir); +#endif if (disk->driverfs_dev) { char *disk_name = make_block_name(disk); sysfs_remove_link(&disk->kobj, "device"); diff --git a/include/linux/genhd.h b/include/linux/genhd.h index fd647fde5ec1..eea61cc8fac1 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -78,6 +78,9 @@ struct hd_struct { sector_t start_sect; sector_t nr_sects; struct kobject kobj; +#ifdef CONFIG_SYSFS + struct kobject *holder_dir; +#endif unsigned ios[2], sectors[2]; /* READs and WRITEs */ int policy, partno; }; @@ -114,6 +117,10 @@ struct gendisk { int number; /* more of the same */ struct device *driverfs_dev; struct kobject kobj; +#ifdef CONFIG_SYSFS + struct kobject *holder_dir; + struct kobject *slave_dir; +#endif struct timer_rand_state *random; int policy; |