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 93C70C7EE30 for ; Mon, 27 Feb 2023 02:14:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230475AbjB0COH (ORCPT ); Sun, 26 Feb 2023 21:14:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230168AbjB0CNc (ORCPT ); Sun, 26 Feb 2023 21:13:32 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 566151ADD2; Sun, 26 Feb 2023 18:11:45 -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 667B060DE3; Mon, 27 Feb 2023 02:11:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3EF03C433EF; Mon, 27 Feb 2023 02:11:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677463865; bh=7TGNfyhRDwZZlIaWlEZY9qW737Cak/c+i9hz8QYLCKA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Tws0r6WCLqUpQekEUho2gaafLW5reCJdSsDKU28bO5IjL4FfL/ooqNvSOs3W5TJXO A5KD2W6NAUdvWK+xqOeATcv6V2/MeE94BB+IAPDhVazywjWR7tZkAoeczmibsLqnVR /MvD7ZA9JhRuyjznMZDx7WjXARC4Zl3kA3RBlfAIPxK6ZkT1WNv22MgfEm5xi4x80p wIdZTkw9ols1GMUn5hVFdgEVGhCGeH/UI4yHg1mLbT9vYlvW9xQ5qhfN+y2QHyaexp Lj9Zl/DvpxtLJZGjgnXU3vJFDhziF6GuM8Cq9AM8CRup3cEps2BH+3jS8aiZHJl/d+ LM2J9BgP0GwQw== 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 5.4 14/15] dm cache: add cond_resched() to various workqueue loops Date: Sun, 26 Feb 2023 21:10:33 -0500 Message-Id: <20230227021038.1052958-14-sashal@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230227021038.1052958-1-sashal@kernel.org> References: <20230227021038.1052958-1-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 10b2a4e10a46b..08b5e44df3248 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -1910,6 +1910,7 @@ static void process_deferred_bios(struct work_struct *ws) else commit_needed = process_bio(cache, bio) || commit_needed; + cond_resched(); } if (commit_needed) @@ -1932,6 +1933,7 @@ 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(); } } @@ -1972,6 +1974,8 @@ static void check_migrations(struct work_struct *ws) r = mg_start(cache, op, NULL); if (r) break; + + cond_resched(); } } -- 2.39.0