The OP missed out the key word "series" from the actual blog. In this context 2.3k refers to 2300. Hopefully @dang can revise the title slightly or maybe just point to the actual patch - https://lore.kernel.org/lkml/[email protected]/T/#u

> The OP missed out the key word "series" from the actual blog.

Probably didn't miss it... probably hit the very strict/short HN post title limit.

No, the limit is 80 characters, and the current title is 73, so "Series " would fit. Also, "2.3k", besides being confusing, is not actually an abbreviation of 2297. len('2297 Patch Series Would Improve Linux Build Times 50~80% & Fix "Dependency Hell"') == 80. Better would be to replace "Patch" with "Commit", since that's how Molnar describes it, but that would take rewording (or removal of quotes) to fit on HN. "Times" -> "Rates" would be sensible too.

who knows if the title of this post has been edited or not since then, there are no indicators whether it was or not edited even if it was in the past...

Yes, the "Massive ~2.3k Patch Series" in the article title give a better idea about this patch vs "2.3K Patch" HN title.

In relation to the article, it seems like Ingo Molnar did everyone a favor by doing some low level code clean up. I hope this gets tested and accepted.

Yeah, it's hard to imagine spending 2 straight years untangling the Gordian Knot even this far. What an amazing feat by Ingo.