From patchwork Mon Aug 12 11:34:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Khoronzhuk X-Patchwork-Id: 1145677 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="f9vf1iLt"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 466YfR3XlFz9sNC for ; Mon, 12 Aug 2019 21:34:39 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728211AbfHLLeg (ORCPT ); Mon, 12 Aug 2019 07:34:36 -0400 Received: from mail-lf1-f67.google.com ([209.85.167.67]:38354 "EHLO mail-lf1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728066AbfHLLef (ORCPT ); Mon, 12 Aug 2019 07:34:35 -0400 Received: by mail-lf1-f67.google.com with SMTP id h28so73914087lfj.5 for ; Mon, 12 Aug 2019 04:34:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=IkqOR8n2+d0i33XDKFM1W8wAyFU3lbQkmsZ60SEYyPM=; b=f9vf1iLtiab+eHV3kZOQO62bnPIg2kpxRLOsLdE2aePP2MavO1FwnSfZTKU2gG1Vid FTSXW6pJnPelXkdyHDsD8HnaKbrZ8HBK1UrAEznDBMiKpWHgKIGy04tN/b/3O7U9FwxN RkELHnQEtDoNEU47ZI+JgZeawx6ZbBzPTqYu3d0adXTAmWT+6iTmJSi0qFzbLiM94EKR b1aOm9gYSrwfwhemeWN5g2PPwPKL9uwujCri85WIHhBMFRpsErG37m7EsTSDMq9v/XwW wwlYlwM5ARj1kSy+dG3Ew25OoxHrFFHqWWqlcwYDkH+ysW1WQUH6cwos+LR+g4T3K/Vt /7FQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=IkqOR8n2+d0i33XDKFM1W8wAyFU3lbQkmsZ60SEYyPM=; b=f0lLW4rx6MljgkBxPlGWGHA5ofr4JI4gd+IbOWmIKwQzUiKj0RPCJwebszQo/GAHh7 zvSEbvg/J0KUNOvbEFYn6FquzICPLiRvTl+gk65196v783GWbfDKdTpdhyT5IjBozJpb h9iy8KNbakpjBLpJfKOV2ekS2lCboEZdl24zo2ExcmQCpqrusnuztPxMjnz3FqL4mQma zTcdZs6XvIfeEN1/I6z+EKIStfUGfOQUAuqbYHLKaMhv/QhBGpELuHCFNGKsLB7Pg2gR Wh86PMKlWXT7hpvP6/72g7GyiHYfPqXvAJhfGqUfN+tp0MipAbjprsE4vqCgcUL0x3D2 TONg== X-Gm-Message-State: APjAAAXmxFTVHQUDvubK+vBaEkJ4rPJ9n0XBcrsauDcj2V0fnPvQPxp5 WUxPK3x6ZiLOqlpmWXXqefDlLA== X-Google-Smtp-Source: APXvYqzh1SErF8ryWdfIHPMHlE6ltaAF9sQ0IEXr2dph8iVua6PhVfFXYXM8qM4Dabgo4tBfsXhDBQ== X-Received: by 2002:ac2:4157:: with SMTP id c23mr19159300lfi.173.1565609673727; Mon, 12 Aug 2019 04:34:33 -0700 (PDT) Received: from localhost.localdomain (168-200-94-178.pool.ukrtel.net. [178.94.200.168]) by smtp.gmail.com with ESMTPSA id a70sm20899745ljf.57.2019.08.12.04.34.32 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 12 Aug 2019 04:34:33 -0700 (PDT) From: Ivan Khoronzhuk To: bjorn.topel@intel.com, linux-mm@kvack.org Cc: xdp-newbies@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, ast@kernel.org, magnus.karlsson@intel.com, Ivan Khoronzhuk Subject: [PATCH bpf-next] mm: mmap: increase sockets maximum memory size pgoff for 32bits Date: Mon, 12 Aug 2019 14:34:29 +0300 Message-Id: <20190812113429.2488-1-ivan.khoronzhuk@linaro.org> X-Mailer: git-send-email 2.17.1 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The AF_XDP sockets umem mapping interface uses XDP_UMEM_PGOFF_FILL_RING and XDP_UMEM_PGOFF_COMPLETION_RING offsets. The offsets seems like are established already and are part of configuration interface. But for 32-bit systems, while AF_XDP socket configuration, the values are to large to pass maximum allowed file size verification. The offsets can be tuned ofc, but instead of changing existent interface - extend max allowed file size for sockets. The 64-bit systems seems like ok with this, so extend threshold only for 32-bits for now. Signed-off-by: Ivan Khoronzhuk --- Based on bpf-next/master mm/mmap.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/mmap.c b/mm/mmap.c index 7e8c3e8ae75f..238ce6b71405 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1358,6 +1358,11 @@ static inline u64 file_mmap_size_max(struct file *file, struct inode *inode) if (S_ISBLK(inode->i_mode)) return MAX_LFS_FILESIZE; +#if BITS_PER_LONG == 32 + if (S_ISSOCK(inode->i_mode)) + return MAX_LFS_FILESIZE; +#endif + /* Special "we do even unsigned file positions" case */ if (file->f_mode & FMODE_UNSIGNED_OFFSET) return 0;