• Tejun Heo's avatar
    blkcg: remove unnecessary blkcg_root handling from css_alloc/free paths · bc915e61
    Tejun Heo authored
    blkcg_css_alloc() bypasses policy data allocation and blkcg_css_free()
    bypasses policy data and blkcg freeing for blkcg_root.  There's no
    reason to to treat policy data any differently for blkcg_root.  If the
    root css gets allocated after policies are registered, policy
    registration path will add policy data; otherwise, the alloc path
    will.  The free path isn't never invoked for root csses.
    This patch removes the unnecessary special handling of blkcg_root from
    css_alloc/free paths.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Cc: Vivek Goyal <vgoyal@redhat.com>
    Signed-off-by: default avatarJens Axboe <axboe@fb.com>
blk-cgroup.c 31.8 KB