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 19A16C6FA8E for ; Mon, 27 Feb 2023 02:17:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231447AbjB0CRW (ORCPT ); Sun, 26 Feb 2023 21:17:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41408 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231701AbjB0CPo (ORCPT ); Sun, 26 Feb 2023 21:15:44 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4534DAD14; Sun, 26 Feb 2023 18:13:10 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D1624B80D33; Mon, 27 Feb 2023 02:11:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0DF39C433EF; Mon, 27 Feb 2023 02:11:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677463890; bh=FTUeRtfvTVBToQ+WRdjN+dpQ+lcHZwaJZKdEyRPT1jo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hzvcWTqkCBWS2FSu/6tzHETuiqNUiq+GRXr82g60TzT/ZBlibR55GHSh/MZx3wWD4 wtRwPZvRytC1vdX6rqRW/R6an+LI42w2jllWul+lJveJNG/5RJl/QIyLksmhWT0agl BJRHuI1OQqujBkDC3sE+3zmzF1a/9N528jfzrmGpB/yp0LLv+u2EbNQUEg5r6cu/6p 9mVgh/x1W70BEn5NmmVcjkfm0cPBcszOuSF07a/XXk4nGVqiN1L6Umq6Z0eP9wCMF3 zK9pooke0JzAi3/y4T0nyHa3scYfabRweOcTky2exe4tMn4xy/JfxKsJfdM0rQ7G5y 3iwwxhbC99xEw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mike Snitzer , Sasha Levin , agk@redhat.com, dm-devel@redhat.com Subject: [PATCH AUTOSEL 4.19 10/10] dm cache: add cond_resched() to various workqueue loops Date: Sun, 26 Feb 2023 21:11:07 -0500 Message-Id: <20230227021110.1053474-10-sashal@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230227021110.1053474-1-sashal@kernel.org> References: <20230227021110.1053474-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mike Snitzer [ Upstream commit 76227f6dc805e9e960128bcc6276647361e0827c ] Otherwise on resource constrained systems these workqueues may be too greedy. Signed-off-by: Mike Snitzer Signed-off-by: Sasha Levin --- drivers/md/dm-cache-target.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index df7bc45bc0ced..b3371812a2158 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -1905,6 +1905,7 @@ static void process_deferred_bios(struct work_struct *ws) else commit_needed = process_bio(cache, bio) || commit_needed; + cond_resched(); } if (commit_needed) @@ -1927,6 +1928,7 @@ static void requeue_deferred_bios(struct cache *cache) while ((bio = bio_list_pop(&bios))) { bio->bi_status = BLK_STS_DM_REQUEUE; bio_endio(bio); + cond_resched(); } } @@ -1967,6 +1969,8 @@ static void check_migrations(struct work_struct *ws) r = mg_start(cache, op, NULL); if (r) break; + + cond_resched(); } } -- 2.39.0