[LINUX] [$] A new API for tree-in-dcache filesystems

[1s2k.pl]

There are a number of kernel filesystems that store their directory entries directly in the directory-entry cache (dcache) without having any permanent storage for those objects. It started out as a "neat hack" for ramfs, Al Viro said, at the start of his filesystem-track session at the 2024 Linux Storage, Filesystem, Memory Management, and BPF Summit. Unfortunately, as the use of this technique has grown into other filesystems, there has been a lot of scope creep that has gotten out of control. He wanted to discuss some new infrastructure that he is working on to try to clean some of that up.

Przeczytaj cały wpis