• Tejun Heo's avatar
    blkcg: fix error return path in blkg_create() · 2423c9c3
    Tejun Heo authored
    In blkg_create(), after lookup of parent fails, the control jumps to
    error path with the error code encoded into @blkg.  The error path
    doesn't use @blkg for the return value.  It returns ERR_PTR(ret).
    Make lookup fail path set @ret instead of @blkg.
    Note that the parent lookup is guaranteed to succeed at that point and
    the condition check is purely for sanity and triggers WARN when fails.
    As such, I don't think it's necessary to mark it for -stable.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Acked-by: default avatarVivek Goyal <vgoyal@redhat.com>