From nobody Mon Apr 6 01:43:21 2026 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 2895FC6FA82 for ; Mon, 12 Sep 2022 15:12:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229909AbiILPMs (ORCPT ); Mon, 12 Sep 2022 11:12:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37186 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229536AbiILPMp (ORCPT ); Mon, 12 Sep 2022 11:12:45 -0400 Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 445882408C for ; Mon, 12 Sep 2022 08:12:45 -0700 (PDT) Received: by mail-pl1-x62a.google.com with SMTP id t3so8905678ply.2 for ; Mon, 12 Sep 2022 08:12:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=J2EfS61ET44TCc+3QSfNlPKs8G07uWPFuZhCKqF9mNg=; b=lvadD5K3rHg41vyguPIZs3SAs0qNEImqL8auN87u0WS8Do2g67gHhkQT80c2u4gJxA RGJOtB8EtMOgz2k4rYvmUvKTGV/3ZnNJse0pcxuUIzu/N0bjKvNPvvyQrk8r6lBIM/Vc /BYK8ItrmRLwSa0fnHA5ys3gKpncm5G+gS1pLgs3lBe6c/qMWSFhc9HHeTqDt5crXB58 dMCmFTlzaspQrnhNv34zGiay22wWatvIt5YpeYR7QmL1bM9UD08RGB/0P0ZxQhU0SQB9 ht62eIr0wA4e+6jHqXf2Iz80usBeX4hXAurB18Zq4qrO8te4W6M3cFsXgDuoywwHSDvN h2Zg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=J2EfS61ET44TCc+3QSfNlPKs8G07uWPFuZhCKqF9mNg=; b=KdhT2tZdbWAt1NM2tBxWkcFBgWnSfiGEhryFCbLUGGNqeiq1gXhkd/Uj1Y5rq7L2XN hhxhN6gN6nK/47+SmGLjsmi0RNHsMN18H2VTN31I/Dtbk4Z//IHu2KaJoddynA9y7g6i GU7UNtXQxaGDkrlWteGWv+PZlyWKb4BBBvODTvoRVEgQYp3xa1dWzVgB9w3KrZHP3brF S3Hf5m70XcQm/gx3ZIlDzKD8Bxv73EZlCO6+4HSjF8+S2fWpLP1d0XeNb92+MSB9Xd4V +ouUUtHZBUFJk+929GPKVR4l7DqqR/erxMaBUVnUxhnXZWx136CzsmoLjmiUSqaDiBtd 19dA== X-Gm-Message-State: ACgBeo2t91u0Y64wB5so5kpqsrNYfl+M3WyKMIyIKKhEVrRR+3USmdWZ RyfyoGd/sB/MXhKBOZ7BoA== X-Google-Smtp-Source: AA6agR6mScOPPWtchxpH7T2XGJUOb+bGqVrhg7PQocFGMCm7j1FNyLGp4fCFo47zYN9F8iYQZqsj5A== X-Received: by 2002:a17:902:e14c:b0:177:e7be:2ab6 with SMTP id d12-20020a170902e14c00b00177e7be2ab6mr23975827pla.25.1662995564687; Mon, 12 Sep 2022 08:12:44 -0700 (PDT) Received: from localhost.localdomain ([43.132.141.3]) by smtp.gmail.com with ESMTPSA id u16-20020a17090a0c5000b00200b2894648sm5311046pje.52.2022.09.12.08.12.42 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 12 Sep 2022 08:12:43 -0700 (PDT) From: xiakaixu1987@gmail.com X-Google-Original-From: kaixuxia@tencent.com To: sj@kernel.org, akpm@linux-foundation.org Cc: damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Kaixu Xia Subject: [PATCH] mm/damon/sysfs: use the wrapper directly to check if the kdamond is running Date: Mon, 12 Sep 2022 23:11:53 +0800 Message-Id: <1662995513-24489-1-git-send-email-kaixuxia@tencent.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Kaixu Xia We can use the 'damon_sysfs_kdamond_running()' wrapper directly to check if the kdamond is running in 'damon_sysfs_turn_damon_on()'. Signed-off-by: Kaixu Xia Reviewed-by: Muchun Song Reviewed-by: SeongJae Park --- mm/damon/sysfs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 7488e27c87c3..84861c4085a5 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -2455,8 +2455,7 @@ static int damon_sysfs_turn_damon_on(struct damon_sys= fs_kdamond *kdamond) struct damon_ctx *ctx; int err; =20 - if (kdamond->damon_ctx && - damon_sysfs_ctx_running(kdamond->damon_ctx)) + if (damon_sysfs_kdamond_running(kdamond)) return -EBUSY; if (damon_sysfs_cmd_request.kdamond =3D=3D kdamond) return -EBUSY; --=20 2.27.0