summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--block/ioctl.c7
-rw-r--r--fs/partitions/check.c40
2 files changed, 23 insertions, 24 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index c722de0..eb046ae 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 68f3e41..16f98d8 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;
}
OpenPOWER on IntegriCloud