The title is not very accurate, this is a thread about a discussion on this topic which will happen at the upcoming Linux Plumbers Conference in late August.
I see what you mean. I just posted it here with the same title that was used on /r/Linux, and that I found accurate (for the same reasons chrismorgan exposed in a sibling comment) but now I agree with you that it could cause some confusion.
Maybe a moderator could rename the post to “discussion about Linux kernel in-tree support” or something like that?
The title is perfectly accurate, it’s an email thread about Linux kernel in-tree Rust support. Sure, you could misconstrue such a title to be implying that the Linux kernel supports Rust in-tree already it if you wanted to, but half the titles on a site like this could be similarly misconstrued.
Unless there’s a strong reason not to, the Hacker News post title should match the email thread title. It does match, and I see no even slightly compelling reason for it to deviate.
