On Sat, 1 Feb 2025 at 06:38, Christian Brauner <brauner@xxxxxxxxxx> wrote:
>
> Ok, but those "device fds" aren't really device fds in the sense that
> they are character fds. They are regular files afaict from:
>
> vfio_device_open_file(struct vfio_device *device)
>
> (Well, it's actually worse as anon_inode_getfile() files don't have any
> mode at all but that's beside the point.)?
>
> In any case, I think you're right that such files would (accidently?)
> qualify for content watches afaict. So at least that should probably get
> FMODE_NONOTIFY.
Hmm. Can we just make all anon_inodes do that? I don't think you can
sanely have pre-content watches on anon-inodes, since you can't really
have access to them to _set_ the content watch from outside anyway..
In fact, maybe do it in alloc_file_pseudo()?
Amir / Josef?
Linus
