Re: [PATCH 3/3] rust: miscdevice: adjust the rust_misc_device sample to use RegistrationData.

[Alice Ryhl]

On Thu, Jan 23, 2025 at 6:57 PM Christian Schrefl
<chrisi.schrefl@xxxxxxxxx> wrote:
>
> Hi Alice
>
> On 21.01.25 4:40 PM, Alice Ryhl wrote:
> > On Sun, Jan 19, 2025 at 11:11 PM Christian Schrefl
> > <chrisi.schrefl@xxxxxxxxx> wrote:
> >>
> >> Share the mutex stored in RustMiscDevice between all instances using an Arc
> >> and the RegistrationData of MiscDeviceRegistration.
> >>
> >> This is mostly to Demonstrate the capability to share data in this way.
> >>
> >> Signed-off-by: Christian Schrefl <chrisi.schrefl@xxxxxxxxx>
> >
> > This change causes all open files to share the same value, instead of
> > it being per-fd.
>
> I know, if that is unwanted I'm fine with dropping this patch,
> it is mostly here to show how patch 2 can be used.

Perhaps instead of changing the per-fd value, we could add a new
shared value? E.g., it could have a counter for the number of open
files.

Alice