Four core VFS primitives landed — the Unix fundamentals that processes need for IPC and coordination.
vfs_watch.sg
Filesystem change notification — inotify-style watch for file/directory events. (083d610)
vfs_lock.sg
Advisory file locking — shared/exclusive locks for coordinated file access. (a0ff32f)
fs_pipe.sg
In-memory pipes for IPC — unidirectional byte streams between processes. (b11c06e)
fs_mmap.sg
Memory-mapped file regions — map file contents into process address space. (16b4a16)