diff options
| -rw-r--r-- | fs/block_dev.c | 50 |
1 files changed, 28 insertions, 22 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index da5f0515e8e..75c47a21b2f 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -872,7 +872,7 @@ static struct bd_holder *find_bd_holder(struct block_device *bdev, */ static int add_bd_holder(struct block_device *bdev, struct bd_holder *bo) { - int ret; + int err; if (!bo) return -EINVAL; @@ -880,15 +880,18 @@ static int add_bd_holder(struct block_device *bdev, struct bd_holder *bo) if (!bd_holder_grab_dirs(bdev, bo)) return -EBUSY; - ret = add_symlink(bo->sdir, bo->sdev); - if (ret == 0) { - ret = add_symlink(bo->hdir, bo->hdev); - if (ret) - del_symlink(bo->sdir, bo->sdev); + err = add_symlink(bo->sdir, bo->sdev); + if (err) + return err; + + err = add_symlink(bo->hdir, bo->hdev); + if (err) { + del_symlink(bo->sdir, bo->sdev); + return err; } - if (ret == 0) - list_add_tail(&bo->list, &bdev->bd_holder_list); - return ret; + + list_add_tail(&bo->list, &bdev->bd_holder_list); + return 0; } /** @@ -946,7 +949,7 @@ static struct bd_holder *del_bd_holder(struct block_device *bdev, static int bd_claim_by_kobject(struct block_device *bdev, void *holder, struct kobject *kobj) { - int res; + int err; struct bd_holder *bo, *found; if (!kobj) @@ -957,21 +960,24 @@ static int bd_claim_by_kobject(struct block_device *bdev, void *holder, return -ENOMEM; mutex_lock(&bdev->bd_mutex); - res = bd_claim(bdev, holder); - if (res == 0) { - found = find_bd_holder(bdev, bo); - if (found == NULL) { - res = add_bd_holder(bdev, bo); - if (res) - bd_release(bdev); - } - } - if (res || found) + err = bd_claim(bdev, holder); + if (err) + goto out; + + found = find_bd_holder(bdev, bo); + if (found) + goto out; + + err = add_bd_holder(bdev, bo); + if (err) + bd_release(bdev); + +out: + if (err || found) free_bd_holder(bo); mutex_unlock(&bdev->bd_mutex); - - return res; + return err; } /** |