On Thu, Apr 24, 2025 at 09:20:53PM -0700, Linus Torvalds wrote: > On Thu, 24 Apr 2025 at 19:46, Kent Overstreet <kent.overstreet@xxxxxxxxx> wrote: > > > > There's a story behind the case insensitive directory fixes, and lessons > > to be learned. > > No. > > The only lesson to be learned is that filesystem people never learn. > > Case-insensitive names are horribly wrong, and you shouldn't have done > them at all. The problem wasn't the lack of testing, the problem was > implementing it in the first place. While I agree with you in _principle_, on this specific subject - This is all irrelevant given that the purpose of the operating system and the filesystem is to support users and the applications they want to run. And the hacks for doing this in userspace don't work. And the attitude of "I hate this, so I'm going to partition this off as much as I can and spend as little time as I can on this" has all made this even worse - the dcache stuff is all half baked. Stroll through the ext4 and xfs code and find all the comments to the effect of "yeah, we should really do this better _eventually_"... And the security issues aren't even case insensitivy, it's just unicode. But that ship has sailed too...
