From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29CD1C433F5 for ; Mon, 27 Sep 2021 10:17:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0B3C760F6D for ; Mon, 27 Sep 2021 10:17:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233703AbhI0KTB (ORCPT ); Mon, 27 Sep 2021 06:19:01 -0400 Received: from out30-44.freemail.mail.aliyun.com ([115.124.30.44]:42132 "EHLO out30-44.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233778AbhI0KTB (ORCPT ); Mon, 27 Sep 2021 06:19:01 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R141e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04395;MF=haoxu@linux.alibaba.com;NM=1;PH=DS;RN=4;SR=0;TI=SMTPD_---0UpmM9j2_1632737841; Received: from B-25KNML85-0107.local(mailfrom:haoxu@linux.alibaba.com fp:SMTPD_---0UpmM9j2_1632737841) by smtp.aliyun-inc.com(127.0.0.1); Mon, 27 Sep 2021 18:17:22 +0800 Subject: Re: [PATCH 2/8] io-wq: add helper to merge two wq_lists From: Hao Xu To: Jens Axboe Cc: io-uring@vger.kernel.org, Pavel Begunkov , Joseph Qi References: <20210927061721.180806-1-haoxu@linux.alibaba.com> <20210927061721.180806-3-haoxu@linux.alibaba.com> Message-ID: <5dd03213-7239-0b5d-1ea4-3169bc1a9877@linux.alibaba.com> Date: Mon, 27 Sep 2021 18:17:21 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <20210927061721.180806-3-haoxu@linux.alibaba.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org 在 2021/9/27 下午2:17, Hao Xu 写道: > add a helper to merge two wq_lists, it will be useful in the next > patches. > > Signed-off-by: Hao Xu > --- > fs/io-wq.h | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/fs/io-wq.h b/fs/io-wq.h > index 8369a51b65c0..7510b05d4a86 100644 > --- a/fs/io-wq.h > +++ b/fs/io-wq.h > @@ -39,6 +39,26 @@ static inline void wq_list_add_after(struct io_wq_work_node *node, > list->last = node; > } > > +/** > + * wq_list_merge - merge the second list to the first one. > + * @list0: the first list > + * @list1: the second list > + * after merge, list0 contains the merged list. > + */ > +static inline void wq_list_merge(struct io_wq_work_list *list0, > + struct io_wq_work_list *list1) > +{ > + if (!list1) > + return; > + > + if (!list0) { > + list0 = list1; > + return; > + } > + list0->last->next = list1->first; > + list0->last = list1->last; > +} This needs some tweak, will send v2 soon. > + > static inline void wq_list_add_tail(struct io_wq_work_node *node, > struct io_wq_work_list *list) > { >