[$] Caching for extended attributes

Extendedattributes (xattrs) provide a way to attach key/value metadata toinodes-files, directories, and the like-in a filesystem. As with manyLinux filesystems, the FUSE filesystemsupports xattrs. In a filesystem-track session at the 2026 Linux Storage,Filesystem, Memory Management, and BPF Summit, FUSE maintainer MiklosSzeredi led a discussion about caching xattrs in kernel memory; he wouldlike to create some common infrastructure that could be used by FUSE andshared with other filesystems.