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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75A46C10F27 for ; Tue, 10 Mar 2020 13:11:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 48FC7208E4 for ; Tue, 10 Mar 2020 13:11:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583845906; bh=D1KMiHMo8Ls72ihrKfQhp1my5vwtKsTTszaB8nmbRHY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Quh3sacuPWhEEBtTLKPvnU3pzr7SBuVJtAWOd7IgNh9+ugtsPczcQIymuom+l5R3U cixkUQr7PTVyiydNh5XXR3SPvMPbS+qELKnyCT22RfHSBfMntY0IQTnFIHFiZHjL3s 8B6XijC8ZgujNHzRTF7Nwr0NKFizSQXmW62Dw0Qw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730453AbgCJNLo (ORCPT ); Tue, 10 Mar 2020 09:11:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:33334 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731061AbgCJNLl (ORCPT ); Tue, 10 Mar 2020 09:11:41 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 273A6246A3; Tue, 10 Mar 2020 13:11:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583845900; bh=D1KMiHMo8Ls72ihrKfQhp1my5vwtKsTTszaB8nmbRHY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oXzSLJJ/YnPjy0VhB42aI/XR1BdjBbZoX5Gw2i4IO8Rg9j+AcAtpAO1mgQz3MxsvL 3tXhZjU1g/Am09qZnioEw4AkHOVsDTqs2j5cOvmr5IllPwpxfNViFxKT0LiYzZZTwH hp7ZRhX11+Xl3/xBtJ+fhwWUVP5nCVpYDFCoDjYE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tomas Henzl , Sumit Saxena , Lee Duncan , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 15/86] scsi: megaraid_sas: silence a warning Date: Tue, 10 Mar 2020 13:44:39 +0100 Message-Id: <20200310124531.614177697@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310124530.808338541@linuxfoundation.org> References: <20200310124530.808338541@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tomas Henzl [ Upstream commit 0e99b2c625da181aebf1a3d13493e3f7a5057a9c ] Add a flag to DMA memory allocation to silence a warning. This driver allocates DMA memory for IO frames. This allocation may exceed MAX_ORDER pages for few megaraid_sas controllers (controllers with very high queue depth). Consequently, the driver has logic to keep reducing the controller queue depth until the DMA memory allocation succeeds. On impacted megaraid_sas controllers there would be multiple DMA allocation failures until driver settled on an allocation that fit. These failed DMA allocation requests caused stack traces in system logs. These were not harmful and this patch silences those warnings/stack traces. [mkp: clarified commit desc] Link: https://lore.kernel.org/r/20200204152413.7107-1-thenzl@redhat.com Signed-off-by: Tomas Henzl Acked-by: Sumit Saxena Reviewed-by: Lee Duncan Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/megaraid/megaraid_sas_fusion.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index b094a4e55c32f..81bd824bb9d99 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -530,7 +530,8 @@ megasas_alloc_request_fusion(struct megasas_instance *instance) fusion->io_request_frames = dma_pool_alloc(fusion->io_request_frames_pool, - GFP_KERNEL, &fusion->io_request_frames_phys); + GFP_KERNEL | __GFP_NOWARN, + &fusion->io_request_frames_phys); if (!fusion->io_request_frames) { if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) { instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT; @@ -568,7 +569,7 @@ megasas_alloc_request_fusion(struct megasas_instance *instance) fusion->io_request_frames = dma_pool_alloc(fusion->io_request_frames_pool, - GFP_KERNEL, + GFP_KERNEL | __GFP_NOWARN, &fusion->io_request_frames_phys); if (!fusion->io_request_frames) { -- 2.20.1