For policies which can do enough initialization from ->cpd_alloc_fn(), make ->cpd_init_fn() optional. Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> --- block/blk-cgroup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 75f7f78b87b2..818e50b4cc7a 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1478,7 +1478,8 @@ int blkcg_policy_register(struct blkcg_policy *pol) blkcg->cpd[pol->plid] = cpd; cpd->blkcg = blkcg; cpd->plid = pol->plid; - pol->cpd_init_fn(cpd); + if (pol->cpd_init_fn) + pol->cpd_init_fn(cpd); } } -- 2.17.1
