From nobody Mon Feb 9 03:47:36 2026 Received: from m16.mail.126.com (m16.mail.126.com [117.135.210.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EEA4429AAF8; Tue, 13 Jan 2026 08:26:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.8 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768292817; cv=none; b=P4miUI9qwWrYYrNW7rFiGTm1SYh8DT9JWV6rl7We05bN24Ffxq4Dn7jgr86R0T7E7JzQzxN9+NiuuDFNr/1oNSgczV4j2Fnfb23oLHQVotsHpBeDH6tTBVykWFP4EIw2OYrirDAuwUxvtWMzxgVptUGnjbZtNHlKyiCq2C+yRXw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768292817; c=relaxed/simple; bh=75Ncf3w2P7c34Pz79cfUZZihvG9f28CGhePPYdD/xk8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=PpTKgQR5jiLr2KPaZmMTudFvjtZL9nUB8i3sGIgf9xcXgq+QaiyPLQ2/55Z0fMMEQ33N4DwbiSmUrO/ABrMOtrE3+PiLarGboZXIOFfdfbIOOfIJccsD3REOFrM1yC+zsuNEsAtB2CpqWWt4BZtPlcsot7Bn0n9N4YeY2VefDd8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=126.com; spf=pass smtp.mailfrom=126.com; dkim=pass (1024-bit key) header.d=126.com header.i=@126.com header.b=O6TIjVGo; arc=none smtp.client-ip=117.135.210.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=126.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=126.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=126.com header.i=@126.com header.b="O6TIjVGo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=CE RUxlJ2Hv3yATM9ATjbmA35RTjNUrDSVC1/ZoZtUXM=; b=O6TIjVGoVCC7IhQ24t NUCZkmdVUxliP96XkUpx933IFr/Q0O7DWwWdGRphu/MKR7qpnoazYTiCPrOoGF// jcMc+ZvGZOFro5Q1H40Qol80aAsLeXEeupVOY6gbznINBmsP3548muwcOm+ZfLp3 izejKi3tdSq7wfrkpz5AsxE0k= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g1-2 (Coremail) with SMTP id _____wDnd66rAWZpH5eYBg--.55121S2; Tue, 13 Jan 2026 16:26:19 +0800 (CST) From: Zhao Mengmeng To: viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz Cc: zhaomengmeng@kylinos.cn, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [vfs/vfs.all PATCH] writeback: use round_jiffies_relative for dirtytime_work Date: Tue, 13 Jan 2026 16:26:14 +0800 Message-ID: <20260113082614.231580-1-zhaomzhao@126.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wDnd66rAWZpH5eYBg--.55121S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7KF45Ar13KF1rJFy5WFWkCrg_yoW8Xr17pF Z8JrnxKr45K3y7X3sxAF1qvr1YgwsFgF17Kr1qqa1ayrn0yryjqa4kAr1SqF1xJ3s5Za4S yrWvya4xZw4Fk3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07U6xRDUUUUU= X-CM-SenderInfo: 52kd0zp2kd0qqrswhudrp/xtbBqwte1WlmAav4YwAA3V Content-Type: text/plain; charset="utf-8" From: Zhao Mengmeng The dirtytime_work is a background housekeeping task that flushes dirty inodes, using round_jiffies_relative() will allow kernel to batch this work with other aligned system tasks, reducing power consumption. Signed-off-by: Zhao Mengmeng Reviewed-by: Jan Kara --- fs/fs-writeback.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index ea95f527aace..a32d354152d0 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -2504,7 +2504,8 @@ static void wakeup_dirtytime_writeback(struct work_st= ruct *w) } rcu_read_unlock(); if (dirtytime_expire_interval) - schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ); + schedule_delayed_work(&dirtytime_work, + round_jiffies_relative(dirtytime_expire_interval * HZ)); } =20 static int dirtytime_interval_handler(const struct ctl_table *table, int w= rite, @@ -2536,7 +2537,8 @@ static const struct ctl_table vm_fs_writeback_table[]= =3D { static int __init start_dirtytime_writeback(void) { if (dirtytime_expire_interval) - schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ); + schedule_delayed_work(&dirtytime_work, + round_jiffies_relative(dirtytime_expire_interval * HZ)); register_sysctl_init("vm", vm_fs_writeback_table); return 0; } --=20 2.43.0