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 C929CC6FD1F for ; Fri, 10 Mar 2023 15:08:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233921AbjCJPIN (ORCPT ); Fri, 10 Mar 2023 10:08:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233779AbjCJPHp (ORCPT ); Fri, 10 Mar 2023 10:07:45 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CBF7713594A for ; Fri, 10 Mar 2023 07:00:37 -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 dfw.source.kernel.org (Postfix) with ESMTPS id CBD3661A7E for ; Fri, 10 Mar 2023 15:00:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA2CCC4339C; Fri, 10 Mar 2023 15:00:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678460411; bh=/WEdsMNQeeICZA04A9FkkUpWTG6LFQ+j0wb+OGvKeCA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BoaI0FUvNUEmpMuTxRqogis7uW8eZDaRjgY9d+Y/ex1e50m4XnM5ssW8ajr5Of1w5 Iqvv3ZiUUnoi6cuVUw5CkLVjOOTTd6mZ/38A9EdS2OyJSx7Aw4LoS0r1cO9QfR+M7Q kYwycqQ4bLgvMKdyiKiIcKSbBxdzlr3TBuX24kOM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mike Snitzer , Sasha Levin Subject: [PATCH 5.10 326/529] dm cache: add cond_resched() to various workqueue loops Date: Fri, 10 Mar 2023 14:37:49 +0100 Message-Id: <20230310133820.108227381@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310133804.978589368@linuxfoundation.org> References: <20230310133804.978589368@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@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 9b2aec3098010..f98ad4366301b 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -1883,6 +1883,7 @@ static void process_deferred_bios(struct work_struct *ws) else commit_needed = process_bio(cache, bio) || commit_needed; + cond_resched(); } if (commit_needed) @@ -1905,6 +1906,7 @@ 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(); } } @@ -1945,6 +1947,8 @@ static void check_migrations(struct work_struct *ws) r = mg_start(cache, op, NULL); if (r) break; + + cond_resched(); } } -- 2.39.2