• Linus Torvalds's avatar
    Merge tag 'virtio-fs-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse · 8f744bde
    Linus Torvalds authored
    Pull fuse virtio-fs support from Miklos Szeredi:
     "Virtio-fs allows exporting directory trees on the host and mounting
      them in guest(s).
      This isn't actually a new filesystem, but a glue layer between the
      fuse filesystem and a virtio based back-end.
      It's similar in functionality to the existing virtio-9p solution, but
      significantly faster in benchmarks and has better POSIX compliance.
      Further permformance improvements can be achieved by sharing the page
      cache between host and guest, allowing for faster I/O and reduced
      memory use.
      Kata Containers have been including the out-of-tree virtio-fs (with
      the shared page cache patches as well) since version 1.7 as an
      experimental feature. They have been active in development and plan to
      switch from virtio-9p to virtio-fs as their default solution. There
      has been interest from other sources as well.
      The userspace infrastructure is slated to be merged into qemu once the
      kernel part hits mainline.
      This was developed by Vivek Goyal, Dave Gilbert and Stefan Hajnoczi"
    * tag 'virtio-fs-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
      virtio-fs: add virtiofs filesystem
      virtio-fs: add Documentation/filesystems/virtiofs.rst
      fuse: reserve values for mapping protocol