• Abhishek Kulkarni's avatar
    9p: Add fscache support to 9p · 60e78d2c
    Abhishek Kulkarni authored
    This patch adds a persistent, read-only caching facility for
    9p clients using the FS-Cache caching backend.
    When the fscache facility is enabled, each inode is associated
    with a corresponding vcookie which is an index into the FS-Cache
    indexing tree. The FS-Cache indexing tree is indexed at 3 levels:
    - session object associated with each mount.
    - inode/vcookie
    - actual data (pages)
    A cache tag is chosen randomly for each session. These tags can
    be read off /sys/fs/9p/caches and can be passed as a mount-time
    parameter to re-attach to the specified caching session.
    Signed-off-by: default avatarAbhishek Kulkarni <adkulkar@umail.iu.edu>
    Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>