From: Tang Junhui <tang.jun...@zte.com.cn>
Thanks to Mike and Coly's comments.
>> + if(ca->set->avail_nbuckets > 0) {
>> + ca->set->avail_nbuckets--;
>> + bch_update_bucket_in_use(ca->set);
>> + }
>> +
>
> I am not sure this needs an atomic. All accesses to this variable are
>> done with the bucket_lock held, so that seems correct. Is this right?
Yes, you are right.
>> static void bch_btree_gc_finish(struct cache_set *c)
> available should be removed and this function should return 0.
I have changed this function to a void type, so nothing need return.
>> + stats.in_use = (c->nbuckets - c->avail_nbuckets) *
>> 100 / c->nbuckets;
>
> This should instead call bch_update_bucket_in_use to avoid code duplication.
OK, I will modify it and resend a v2 patch later.
> Overall I think this is a good piece of progress.
Thanks for your review and comments again.
Tang Junhui
