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 1F572C33CB3 for ; Wed, 15 Jan 2020 12:44:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E0E98222C3 for ; Wed, 15 Jan 2020 12:44:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579092249; bh=Vx7YqZ/k22cc8K5Q83ICDc15J5HPJf1Ilju5QsfJpH0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=AiaT+7pK9LkIADPH6svNU+rD3ejFTTpQRX7T9Y+ulLICYKgTVmKQOHnZDK36J1cOx y1AmCKQa4pdSfkEk9V9a7M8+yybLSoXJe05/hBP1whW8UwtMEQn7issgicYmMr1NJF WIzRY+EjMIKP+NQ64sZr06EVG1AX5DJKoEQZceXk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729125AbgAOMoI (ORCPT ); Wed, 15 Jan 2020 07:44:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:57474 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725999AbgAOMoH (ORCPT ); Wed, 15 Jan 2020 07:44:07 -0500 Received: from localhost (unknown [193.47.165.251]) (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 A414F2465A; Wed, 15 Jan 2020 12:44:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579092247; bh=Vx7YqZ/k22cc8K5Q83ICDc15J5HPJf1Ilju5QsfJpH0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wn+xJQ8bN1Vq262yJ+ALIMQbBXA2jvdUB7daXmdKTCanSMwhZIZdeOKF5c+LNgzFL HZoGYJqwwa4xSXZesnGagrEbsX5i1SR/mjEyrK1nvHJyZeTDYh+FL/YxvqEHRJ4SQ9 YAOalELfroimSCw3AQHwo+DzHXzmQn2kcsA6H7QI= From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe , "David S . Miller" , Santosh Shilimkar Cc: Leon Romanovsky , RDMA mailing list , Hans Westgaard Ry , Moni Shoua , linux-netdev Subject: [PATCH mlx5-next 08/10] net/rds: Detect need of On-Demand-Paging memory registration Date: Wed, 15 Jan 2020 14:43:38 +0200 Message-Id: <20200115124340.79108-9-leon@kernel.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200115124340.79108-1-leon@kernel.org> References: <20200115124340.79108-1-leon@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Hans Westgaard Ry Add code to check if memory intended for RDMA is FS-DAX-memory. RDS will fail with error code EOPNOTSUPP if FS-DAX-memory is detected. Signed-off-by: Hans Westgaard Ry Signed-off-by: Leon Romanovsky --- net/rds/rdma.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/net/rds/rdma.c b/net/rds/rdma.c index 916f5ec373d8..eb23c38ce2b3 100644 --- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -156,11 +156,13 @@ void rds_rdma_drop_keys(struct rds_sock *rs) static int rds_pin_pages(unsigned long user_addr, unsigned int nr_pages, struct page **pages, int write) { + unsigned int gup_flags = FOLL_LONGTERM; int ret; - ret = get_user_pages_fast(user_addr, nr_pages, write ? FOLL_WRITE : 0, - pages); + if (write) + gup_flags |= FOLL_WRITE; + ret = get_user_pages_fast(user_addr, nr_pages, gup_flags, pages); if (ret >= 0 && ret < nr_pages) { while (ret--) put_page(pages[ret]); -- 2.20.1