Re: [PATCH v9 1/4] vfs, fdtable: Add fget_task helper

[Arnd Bergmann]

On Tue, Jan 7, 2020 at 6:59 PM Sargun Dhillon <sargun@xxxxxxxxx> wrote:
>
> This introduces a function which can be used to fetch a file, given an
> arbitrary task. As long as the user holds a reference (refcnt) to the
> task_struct it is safe to call, and will either return NULL on failure,
> or a pointer to the file, with a refcnt.
>
> This patch is based on Oleg Nesterov's (cf. [1]) patch from September
> 2018.
>
> [1]: Link: https://lore.kernel.org/r/20180915160423.GA31461@xxxxxxxxxx
>
> Signed-off-by: Sargun Dhillon <sargun@xxxxxxxxx>
> Suggested-by: Oleg Nesterov <oleg@xxxxxxxxxx>
> Acked-by: Christian Brauner <christian.brauner@xxxxxxxxxx>

Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>