On Tue, Oct 24, 2017 at 01:47:47PM -0400, Olga Kornievskaia wrote:
> + copy->cp_clp = cstate->clp;
> + memcpy(©->fh, &cstate->current_fh.fh_handle,
> + sizeof(struct knfsd_fh));
> + copy->net = SVC_NET(rqstp);
> + if (!copy->cp_synchronous) {
I was thinking we might want to do a synchronous copy anyway in some
cases: e.g. if the copy is relatively small or if the filesystem
supports clone.
But I guess that's a premature optimization; better to keep this as you
have it for now.
--b.
> + status = nfsd4_init_copy_res(copy, 0);
> + async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL);
> + if (!async_copy) {
> + status = nfserrno(-ENOMEM);
> + goto out;
> + }
> + dup_copy_fields(copy, async_copy);
> + memcpy(©->cp_res.cb_stateid, ©->cp_dst_stateid,
> + sizeof(copy->cp_dst_stateid));
> + spin_lock(&async_copy->cp_clp->async_lock);
> + list_add(&async_copy->copies,
> + &async_copy->cp_clp->async_copies);
> + spin_unlock(&async_copy->cp_clp->async_lock);
> + async_copy->copy_task = kthread_create(nfsd4_do_async_copy,
> + async_copy, "%s", "copy thread");
> + if (IS_ERR(async_copy->copy_task)) {
> + status = PTR_ERR(async_copy->copy_task);
> + goto out_err_dec;
> + }
> + wake_up_process(async_copy->copy_task);
> + } else {
> + status = nfsd4_do_copy(copy, 1);
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