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 DDE97C18E5A for ; Tue, 10 Mar 2020 13:25:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B46E720675 for ; Tue, 10 Mar 2020 13:25:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583846754; bh=m3/5GV8iND6nq+ZvNW2PfXvQ5eZR+5DVF27T+hS7AB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vY6tyMWZ6+yb4QD+zwdcpfKnXV+2Vw+rGYCmkGBMmsjxHydAxOBoPso7K5SqCi4Jg ALBSbKNF1m4/6QVCYeZY7/rdqSylzdwh4bTleb6jJ5sNR/Xed2xZUFgQEQV5cvu/Vy aPFEH+F7A0mOMvTbZ5CJxbzZQ7X0XJbUKdZ7oPuQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729459AbgCJM4l (ORCPT ); Tue, 10 Mar 2020 08:56:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:35928 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729679AbgCJM4k (ORCPT ); Tue, 10 Mar 2020 08:56:40 -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 720502253D; Tue, 10 Mar 2020 12:56:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583844999; bh=m3/5GV8iND6nq+ZvNW2PfXvQ5eZR+5DVF27T+hS7AB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IXNnV23yvM3CpKE5oONvXoPc0Igp6vKBcZYyak83U4yX60Pip0W1Hk1wulao6ODke t0ZRyV59ddePB2ke8DL5ilZJcmPiyPDdDs2rDSz3dMmA661+6/6PAB5VfjTA7pP+WD HcPerxoTZR2ouEN6VeLKHCwdutEZ2l/BD9WbpbBs= 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 5.5 026/189] scsi: megaraid_sas: silence a warning Date: Tue, 10 Mar 2020 13:37:43 +0100 Message-Id: <20200310123642.090587718@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310123639.608886314@linuxfoundation.org> References: <20200310123639.608886314@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@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 46bc062d873ef..d868388018053 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -594,7 +594,8 @@ 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; @@ -632,7 +633,7 @@ 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