diff options
| -rw-r--r-- | block/ioctl.c | 7 | ||||
| -rw-r--r-- | fs/partitions/check.c | 40 |
2 files changed, 23 insertions, 24 deletions
diff --git a/block/ioctl.c b/block/ioctl.c index c722de0ef2e..eb046aeede8 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -43,12 +43,9 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user || pstart < 0 || plength < 0) return -EINVAL; } - /* partition number in use? */ + mutex_lock(&bdev->bd_mutex); - if (disk->part[part - 1]) { - mutex_unlock(&bdev->bd_mutex); - return -EBUSY; - } + /* overlap? */ for (i = 0; i < disk->minors - 1; i++) { struct hd_struct *s = disk->part[i]; diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 68f3e41ae66..16f98d82460 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -300,15 +300,6 @@ struct device_type part_type = { .release = part_release, }; -static inline void partition_sysfs_add_subdir(struct hd_struct *p) -{ - struct kobject *k; - - k = kobject_get(&p->dev.kobj); - p->holder_dir = kobject_create_and_add("holders", k); - kobject_put(k); -} - static inline void disk_sysfs_add_subdirs(struct gendisk *disk) { struct kobject *k; @@ -347,13 +338,16 @@ int add_partition(struct gendisk *disk, int part, sector_t start, sector_t len, struct hd_struct *p; int err; + if (disk->part[part - 1]) + return -EBUSY; + p = kzalloc(sizeof(*p), GFP_KERNEL); if (!p) return -ENOMEM; if (!init_part_stats(p)) { err = -ENOMEM; - goto out0; + goto out_free; } p->start_sect = start; p->nr_sects = len; @@ -372,34 +366,42 @@ int add_partition(struct gendisk *disk, int part, sector_t start, sector_t len, p->dev.class = &block_class; p->dev.type = &part_type; p->dev.parent = &disk->dev; - disk->part[part-1] = p; /* delay uevent until 'holders' subdir is created */ p->dev.uevent_suppress = 1; err = device_add(&p->dev); if (err) - goto out1; - partition_sysfs_add_subdir(p); + goto out_put; + + err = -ENOMEM; + p->holder_dir = kobject_create_and_add("holders", &p->dev.kobj); + if (!p->holder_dir) + goto out_del; + p->dev.uevent_suppress = 0; if (flags & ADDPART_FLAG_WHOLEDISK) { err = device_create_file(&p->dev, &dev_attr_whole_disk); if (err) - goto out2; + goto out_del; } + /* everything is up and running, commence */ + disk->part[part - 1] = p; + /* suppress uevent if the disk supresses it */ if (!disk->dev.uevent_suppress) kobject_uevent(&p->dev.kobj, KOBJ_ADD); return 0; -out2: +out_free: + kfree(p); + return err; +out_del: + kobject_put(p->holder_dir); device_del(&p->dev); -out1: +out_put: put_device(&p->dev); - free_part_stats(p); -out0: - kfree(p); return err; } |