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    SubjectRe: [GIT PULL] kdbus for 4.1-rc1
    On Wed, Apr 29, 2015 at 12:30 PM, Austin S Hemmelgarn
    <ahferroin7@gmail.com> wrote:
    > On 2015-04-29 14:54, Andy Lutomirski wrote:
    >>
    >> On Apr 29, 2015 5:48 AM, "Harald Hoyer" <harald@redhat.com> wrote:
    >>>
    >>>
    >>> * Being in the kernel closes a lot of races which can't be fixed with
    >>> the current userspace solutions. For example, with kdbus, there is a
    >>> way a client can disconnect from a bus, but do so only if no further
    >>> messages present in its queue, which is crucial for implementing
    >>> race-free "exit-on-idle" services
    >>
    >>
    >> This can be implemented in userspace.
    >>
    >> Client to dbus daemon: may I exit now?
    >> Dbus daemon to client: yes (and no more messages) or no
    >>
    > Depending on how this is implemented, there would be a potential issue if a
    > message arrived for the client after the daemon told it it could exit, but
    > before it finished shutdown, in which case the message might get lost.
    >

    Then implement it the right way? The client sends some kind of
    sequence number with its request.

    --Andy


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