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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8204EC433EF for ; Wed, 15 Jun 2022 16:34:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356579AbiFOQej (ORCPT ); Wed, 15 Jun 2022 12:34:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38828 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356594AbiFOQed (ORCPT ); Wed, 15 Jun 2022 12:34:33 -0400 Received: from mail-wr1-x42a.google.com (mail-wr1-x42a.google.com [IPv6:2a00:1450:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D771E2AE20 for ; Wed, 15 Jun 2022 09:34:32 -0700 (PDT) Received: by mail-wr1-x42a.google.com with SMTP id o8so16133081wro.3 for ; Wed, 15 Jun 2022 09:34:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pRvBVOE/hkiozWmaa4rfYGZwNs1AXWCtzZOpvsa5jls=; b=mkDEbLx048bx1/e07voGxuV2tza+hsmZn3tB/pZ7yUvMmJ5JTjM5AZUnqcZAV62b8E SjXarMmiZvZusXC/1TqdCYOm6hPhoJy2aIsVwycCog0OabeOSmovt+YD6M/sV1Yt3ZTZ XhHoqrqLqRu/MNAHCKFAshbSTNIXS1zqb3YT4entdC96rY8t2VDsCNuHF5DntbErwryW yUwdvG0Pnpe+m2fm96oQzTajGUkoSP8n0fae4+4saLd3rihEuHLghqgq5fHpr5PsdTbz Z4BqwPcaZBS0fne6aRMJ8J9kY4z5BTN9+7cAuG9S4qcSRmOZJh5uJq09JKHF4s3lpERI kXzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pRvBVOE/hkiozWmaa4rfYGZwNs1AXWCtzZOpvsa5jls=; b=2Pk9aVeGwHtYqM4PTrIVV7dPUnonh+GJRdOyDdpK8OiWiLhydQ1fzGzl2HX78kse9N 629OLV9yQxuFJrCI2f8U79f7XJy5fO8dIJb5SxxhY2m4R3f+3PoJirJNmV7d5hpOP/9+ lFS2YqEhQgB9K10/ojrevZJIdNpw8TbRwOMhQJ3MJI7Gjuwtz7EMIPeOSV63kcW/sApI 9TE4K10MxoiruQU9Y9MyLJb7QpMzGComFEjYiz7jKVOyXXb/R0AohR/YMTAaM73XR9r0 P+WZY6xNiGW/tHaJ53tnVplQYMmyC6LqKKP3LxSIYEbtSzfRgmcsqvB9xUSvSFnfyIMV q3cA== X-Gm-Message-State: AJIora9bRYchEkEhA30SFPSpatomEltvXITd3Tyshg1YIoD/sZHwV1eP YLTH5ApLCmmeeLaqjRB09C7AFFeqNPqaSw== X-Google-Smtp-Source: AGRyM1vCbCshGB2T1No40yygfprda9pdTH4mYbYGjAZKAO5r34dfkNhbNT1IkhzaYIfGzSbTohUNcw== X-Received: by 2002:a05:6000:168c:b0:218:4523:c975 with SMTP id y12-20020a056000168c00b002184523c975mr625119wrd.23.1655310871203; Wed, 15 Jun 2022 09:34:31 -0700 (PDT) Received: from 127.0.0.1localhost (188.28.125.106.threembb.co.uk. [188.28.125.106]) by smtp.gmail.com with ESMTPSA id u2-20020a056000038200b0020ff3a2a925sm17894953wrf.63.2022.06.15.09.34.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jun 2022 09:34:30 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com Subject: [PATCH for-next 06/10] io_uring: explain io_wq_work::cancel_seq placement Date: Wed, 15 Jun 2022 17:33:52 +0100 Message-Id: <988e87eec9dc700b5dae933df3aefef303502f6c.1655310733.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Add a comment on why we keep ->cancel_seq in struct io_wq_work instead of struct io_kiocb despite it needed only by io_uring but not io-wq. Signed-off-by: Pavel Begunkov --- io_uring/io-wq.h | 1 + 1 file changed, 1 insertion(+) diff --git a/io_uring/io-wq.h b/io_uring/io-wq.h index ba6eee76d028..3f54ee2a8eeb 100644 --- a/io_uring/io-wq.h +++ b/io_uring/io-wq.h @@ -155,6 +155,7 @@ struct io_wq_work_node *wq_stack_extract(struct io_wq_work_node *stack) struct io_wq_work { struct io_wq_work_node list; unsigned flags; + /* place it here instead of io_kiocb as it fills padding and saves 4B */ int cancel_seq; }; -- 2.36.1