On Mon, Oct 05, 2015 at 10:14:24PM +0530, Chandan Rajendra wrote:
> + if (unlikely(root->highest_objectid >= BTRFS_LAST_FREE_OBJECTID)) {
> + mutex_unlock(&root->objectid_mutex);
> + ret = -ENOSPC;
ENOSPC ... I don't think it's right as this could be with a normal
enospc during subvolume creation. The problem is that theh inode number
space is exhausted, the closest error code I see is EOVERFLOW. As this
is an ioctl we can afford to define the meaning of this return value as
such (unlike for eg. creat()/open()).
> + goto free_root_dev;
> + }
> +
> + mutex_unlock(&root->objectid_mutex);
> +
> return 0;
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