[mig_]

Ext4 is most certainly still in use and not a toy. Its trusted. It takes a lot for folks to adopt a new file system.

I worked on a research topic in grad school and learned about holes in files, and how data isn’t removed until the last fd is closed. I use that systems knowledge in my job weekly.

A tip. Kernel development can be lonely, share what you are working on and find others.

[bluGill]

he said netbsd - there I would expect ext4 to be considered a toy even though it is used a lot in linux land. Different worlds.