Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753242AbdLDQD3 (ORCPT ); Mon, 4 Dec 2017 11:03:29 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:33622 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753187AbdLDQDW (ORCPT ); Mon, 4 Dec 2017 11:03:22 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Williams , Christoph Hellwig , Jason Gunthorpe , Doug Ledford , Sean Hefty , Hal Rosenstock , Jeff Moyer , Ross Zwisler , Inki Dae , Jan Kara , Joonyoung Shim , Kyungmin Park , Mauro Carvalho Chehab , Mel Gorman , Seung-Woo Kim , Vlastimil Babka , Andrew Morton , Linus Torvalds Subject: [PATCH 4.14 12/95] IB/core: disable memory registration of filesystem-dax vmas Date: Mon, 4 Dec 2017 16:59:36 +0100 Message-Id: <20171204160046.689688269@linuxfoundation.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171204160046.206920966@linuxfoundation.org> References: <20171204160046.206920966@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1938 Lines: 51 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Williams commit 5f1d43de54164dcfb9bfa542fcc92c1e1a1b6c1d upstream. Until there is a solution to the dma-to-dax vs truncate problem it is not safe to allow RDMA to create long standing memory registrations against filesytem-dax vmas. Link: http://lkml.kernel.org/r/151068941011.7446.7766030590347262502.stgit@dwillia2-desk3.amr.corp.intel.com Fixes: 3565fce3a659 ("mm, x86: get_user_pages() for dax mappings") Signed-off-by: Dan Williams Reported-by: Christoph Hellwig Reviewed-by: Christoph Hellwig Acked-by: Jason Gunthorpe Acked-by: Doug Ledford Cc: Sean Hefty Cc: Hal Rosenstock Cc: Jeff Moyer Cc: Ross Zwisler Cc: Inki Dae Cc: Jan Kara Cc: Joonyoung Shim Cc: Kyungmin Park Cc: Mauro Carvalho Chehab Cc: Mel Gorman Cc: Seung-Woo Kim Cc: Vlastimil Babka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/core/umem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -191,7 +191,7 @@ struct ib_umem *ib_umem_get(struct ib_uc sg_list_start = umem->sg_head.sgl; while (npages) { - ret = get_user_pages(cur_base, + ret = get_user_pages_longterm(cur_base, min_t(unsigned long, npages, PAGE_SIZE / sizeof (struct page *)), gup_flags, page_list, vma_list);