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blkcg: make ->cpd_init_fn() optional

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For policies which can do enough initialization from ->cpd_alloc_fn(),
make ->cpd_init_fn() optional.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Tejun Heo 2019-08-28 15:05:52 -07:00 committed by Jens Axboe
parent cf09a8ee19
commit 86a5bba5c2
1 changed files with 2 additions and 1 deletions
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3
block/blk-cgroup.c
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@ -1475,7 +1475,8 @@ 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);
}
}