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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 936EDC43441 for ; Thu, 8 Nov 2018 22:42:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 57A8520857 for ; Thu, 8 Nov 2018 22:42:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="dANwcxkj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 57A8520857 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728782AbeKIHdP (ORCPT ); Fri, 9 Nov 2018 02:33:15 -0500 Received: from mail.kernel.org ([198.145.29.99]:48800 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727215AbeKIHdO (ORCPT ); Fri, 9 Nov 2018 02:33:14 -0500 Received: from localhost (unknown [208.72.13.198]) (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 86A6A20989; Thu, 8 Nov 2018 21:55:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541714147; bh=AndK1FethAOJ112BIWbfZmRjOL+PzcjCFsTE8U73UZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dANwcxkjp+uv1e54DRtDW+j4LVTgfT7nzb0zdAD3hEFueU6V/lVDmAk4FfagCPgQ8 iYW8Dj1eWYIAYAhXSTnhQuKkRDX9/M2uJ9mwsFxskFRLkSD2Y6nun05ubggVMl6QzD vTjGryUjArAeyWz8ytD+A4R9NFY03ue177Mxf2F4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christoph Hellwig , Sasha Levin , Bart Van Assche , Alexei Starovoitov , Sasha Levin Subject: [PATCH 3.18 059/144] scsi: ->queue_rq cant sleep Date: Thu, 8 Nov 2018 13:50:30 -0800 Message-Id: <20181108215059.117746183@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181108215054.826084593@linuxfoundation.org> References: <20181108215054.826084593@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review 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 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 70a0f2c1898c6abf53670e55642b6e840b003892 ] The blk-mq ->queue_rq method is always called from process context, but might have preemption disabled. This means we still always have to use GFP_ATOMIC for memory allocations, and thus need to revert part of commit 3c356bde1 ("scsi: stop passing a gfp_mask argument down the command setup path"). Signed-off-by: Christoph Hellwig Reported-by: Sasha Levin Reviewed-by: Bart Van Assche Tested-by: Alexei Starovoitov Signed-off-by: Sasha Levin --- drivers/scsi/scsi_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index a11837054d6c..0d5c218b7ad1 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -616,7 +616,7 @@ static int scsi_alloc_sgtable(struct scsi_data_buffer *sdb, int nents, } ret = __sg_alloc_table(&sdb->table, nents, SCSI_MAX_SG_SEGMENTS, - first_chunk, gfp_mask, scsi_sg_alloc); + first_chunk, GFP_ATOMIC, scsi_sg_alloc); if (unlikely(ret)) scsi_free_sgtable(sdb, mq); return ret; -- 2.17.1