• Mark Fasheh's avatar
    ocfs2: POSIX file locks support · 53da4939
    Mark Fasheh authored
    This is actually pretty easy since fs/dlm already handles the bulk of the
    work. The Ocfs2 userspace cluster stack module already uses fs/dlm as the
    underlying lock manager, so I only had to add the right calls.
    Cluster-aware POSIX locks ("plocks") can be turned off by the same means at
    UNIX locks - mount with 'noflocks', or create a local-only Ocfs2 volume.
    Internally, the file system uses two sets of file_operations, depending on
    whether cluster aware plocks is required. This turns out to be easier than
    implementing local-only versions of ->lock.
    Signed-off-by: default avatarMark Fasheh <mfasheh@suse.com>
locks.h 1.12 KB