Btrfs Adding Fast/Realtime Zstd Compression & Other Performance Optimizations

David Sterba of SUSE sent in all of the Btrfs file-system updates today for the now-open Linux 6.15 kernel merge window. There are some new performance optimizations, new and faster Zstd compression level options, and other changes slated to be included for this CoW file-system in Linux 6.15...