EXT4 Case Insensitive Support Sent In For The Linux 5.2 Kernel

[oiaohm]

So all three lowercase versions must be able to coexist in the same directory, while in a theoretical homoglyph-folding filesystem the uppercase versions cannot. But what happens if you now open a file using one of the uppercase characters? By which criteria are you going to decide which one to open?

Casefold full also fold the lower case to lower case. So no not all 3 lowercase versions have to be able to exist in a directory at the same time. Basically the first one to exist is it. Yes and this is why you include option to only turn casefold on particular directories.

This is why i refer to this as casefold not case insensitive that much.

Basically go look at the page 3 of the pdf I put up. It casefolding all lower case chars there are no upper case chars there.

https://linuxplumbersconf.org/event/2/contributions/242/attachments/140/173/case-insensitive-lookups.pdf