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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 1FE80C3F2CD for ; Tue, 3 Mar 2020 02:59:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EBB7921D56 for ; Tue, 3 Mar 2020 02:59:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583204341; bh=m3/5GV8iND6nq+ZvNW2PfXvQ5eZR+5DVF27T+hS7AB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=bVvOqYE+07xuF1oV/3SE7Y4TPywbmwb0PKpyTmjbdsLennXTtY2ltmA1CnlLOZBUO zU1X3YHLGRqd1YBFHp7vP9nNeTfgwsMykPdprJpljGbxI/LvJHNDyCtBqlonZghEgd nywL5zDe6gQgNJ3qwgcx9ITF8WFDSmG1t5AV5N6w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728864AbgCCC67 (ORCPT ); Mon, 2 Mar 2020 21:58:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:43344 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728231AbgCCCr7 (ORCPT ); Mon, 2 Mar 2020 21:47:59 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D8BBE246D6; Tue, 3 Mar 2020 02:47:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583203678; bh=m3/5GV8iND6nq+ZvNW2PfXvQ5eZR+5DVF27T+hS7AB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OT/96ng/nGYJPcu4xo0hlDfLhygu3zDj24+aqKX8RC8FW0UQAzJ5sgoF//XTmdeLU 3/c8XW9/FTdJKeRSMANGJQ4u/O51HAZWzM06ynuNhhTFqyR8Cf/lr78WnQgOQTmuRJ RPUtVahyc0xeCE3DrYFWT8KCQNd8N/hZA6TLbJ+U= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tomas Henzl , Sumit Saxena , Lee Duncan , "Martin K . Petersen" , Sasha Levin , megaraidlinux.pdl@broadcom.com, linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 15/58] scsi: megaraid_sas: silence a warning Date: Mon, 2 Mar 2020 21:46:57 -0500 Message-Id: <20200303024740.9511-15-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200303024740.9511-1-sashal@kernel.org> References: <20200303024740.9511-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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 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