• Tejun Heo's avatar
    kernfs: add kernfs_dir_ops · 80b9bbef
    Tejun Heo authored
    Add support for mkdir(2), rmdir(2) and rename(2) syscalls.  This is
    implemented through optional kernfs_dir_ops callback table which can
    be specified on kernfs_create_root().  An implemented callback is
    invoked when the matching syscall is invoked.
    As kernfs keep dcache syncs with internal representation and
    revalidates dentries on each access, the implementation of these
    methods is extremely simple.  Each just discovers the relevant
    kernfs_node(s) and invokes the requested callback which is allowed to
    do any kernfs operations and the end result doesn't necessarily have
    to match the expected semantics of the syscall.
    This will be used to convert cgroup to use kernfs instead of its own
    filesystem implementation.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
mount.c 1.65 KB