From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B36A6BA4F for ; Tue, 7 Mar 2023 19:05:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F1D54C433EF; Tue, 7 Mar 2023 19:05:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678215944; bh=Js8oo+zc7KqxugakUNiBoyxrYSA8cTmXFPVlMzzCJWY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iX0gLP9l1g0dfT9cHbBsVhUKF6R/CZzzXS92JHEWOqtTJU1lRo71hwxtbtZUxURiF tciZUuWBxYUqUYEAo9Tv7/IykaccjGhvWxLQdeu9AOGUHGBDlUkBrFDjQ6fOGm70CN nD061hpDy2w9r2+HvensKJoTCepdCUiIXFwxeOBY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mike Snitzer , Sasha Levin Subject: [PATCH 5.15 424/567] dm thin: add cond_resched() to various workqueue loops Date: Tue, 7 Mar 2023 18:02:40 +0100 Message-Id: <20230307165924.251300790@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307165905.838066027@linuxfoundation.org> References: <20230307165905.838066027@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Mike Snitzer [ Upstream commit e4f80303c2353952e6e980b23914e4214487f2a6 ] Otherwise on resource constrained systems these workqueues may be too greedy. Signed-off-by: Mike Snitzer Signed-off-by: Sasha Levin --- drivers/md/dm-thin.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index cce26f46ded52..f7124f257703c 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2217,6 +2217,7 @@ static void process_thin_deferred_bios(struct thin_c *tc) throttle_work_update(&pool->throttle); dm_pool_issue_prefetches(pool->pmd); } + cond_resched(); } blk_finish_plug(&plug); } @@ -2299,6 +2300,7 @@ static void process_thin_deferred_cells(struct thin_c *tc) else pool->process_cell(tc, cell); } + cond_resched(); } while (!list_empty(&cells)); } -- 2.39.2