From: Tom Herbert <t...@herbertland.com>
Date: Tue, 1 Dec 2015 15:11:09 -0800
> + lock = rht_bucket_lock(tbl, hash);
> +
> + spin_lock_bh(lock);
> +
> + pprev = &tbl->buckets[hash];
> + rht_for_each(he, tbl, hash) {
> + if (he != obj_old) {
> + pprev = &he->next;
> + continue;
> + }
> +
> + rcu_assign_pointer(obj_new->next, obj_old->next);
> + rcu_assign_pointer(*pprev, obj_new);
> + err = 0;
> + break;
Are you sure this works fine in the presence of both parallel readers and
table expansion passes?
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