+static int cbt_ioc_stop(struct block_device *bdev, struct blk_user_cbt_info
__user *ucbt_ioc)
+{
+ struct blk_user_cbt_info ci;
struct request_queue *q;
+ struct cbt_info *cbt;
+
+ if (copy_from_user(&ci, ucbt_ioc, sizeof(ci)))
+ return -EFAULT;
mutex_lock(&cbt_mutex);
q = bdev_get_queue(bdev);
- if(!q->cbt) {
- mutex_unlock(&cbt_mutex);
- return -EINVAL;
- }
- blk_cbt_release(q);
+
+ cbt = blk_cbt_find(q, ci.ci_name);
+ if (!cbt)
+ return -ENOMEM;
EINVAL (as it was before) or ENOENT (no cbt) would suite this error path
better.
+
+ blk_cbt_del(cbt);
+
mutex_unlock(&cbt_mutex);
return 0;
}
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