• Tejun Heo's avatar
    blkcg: make blkg_[rw]stat_recursive_sum() to be able to index into blkcg_gq · f12c74ca
    Tejun Heo authored
    
    
    Currently, blkg_[rw]stat_recursive_sum() assume that the target
    counter is located in pd (blkg_policy_data); however, some counters
    are planned to be moved to blkg (blkcg_gq).
    
    This patch updates blkg_[rw]stat_recursive_sum() to take blkg and
    blkg_policy pointers instead of pd.  If policy is NULL, it indexes
    into blkg.  If non-NULL, into the blkg's pd of the policy.
    
    The existing usages are updated to maintain the current behaviors.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Cc: Vivek Goyal <vgoyal@redhat.com>
    Signed-off-by: default avatarJens Axboe <axboe@fb.com>
    f12c74ca
blk-cgroup.h 21.3 KB