On 19/8/21 5:26 pm, Christoph Hellwig wrote:
On Wed, Aug 18, 2021 at 03:38:23PM +0800, Desmond Cheong Zhi Xi wrote:
+EXPORT_SYMBOL(task_work_add);
EXPORT_SYMBOL_GPL for this kinds of functionality, please.
Thanks, I wasn't aware of the GPL-only export. I'll update this in a
future series i
On Wed, Aug 18, 2021 at 03:38:23PM +0800, Desmond Cheong Zhi Xi wrote:
> The task_work_add function is needed to prevent userspace races with
> DRM modesetting rights.
>
> Some DRM ioctls can change modesetting permissions while other
> concurrent users are performing modesetting. To prevent races
The task_work_add function is needed to prevent userspace races with
DRM modesetting rights.
Some DRM ioctls can change modesetting permissions while other
concurrent users are performing modesetting. To prevent races with
userspace, such functions should flush readers of old permissions
before re
