From patchwork Thu Sep 29 10:34:21 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= X-Patchwork-Id: 116932 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 4FE541007D4 for ; Thu, 29 Sep 2011 20:34:48 +1000 (EST) Received: from localhost ([::1]:59463 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R9Dwu-0001QX-Fz for incoming@patchwork.ozlabs.org; Thu, 29 Sep 2011 06:34:40 -0400 Received: from eggs.gnu.org ([140.186.70.92]:53102) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R9Dwo-0001Q8-HQ for qemu-devel@nongnu.org; Thu, 29 Sep 2011 06:34:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R9Dwm-0002qm-Ub for qemu-devel@nongnu.org; Thu, 29 Sep 2011 06:34:34 -0400 Received: from mx1.redhat.com ([209.132.183.28]:65494) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R9Dwm-0002qc-2w for qemu-devel@nongnu.org; Thu, 29 Sep 2011 06:34:32 -0400 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p8TAYUlK031317 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 29 Sep 2011 06:34:31 -0400 Received: from t500wlan.home.berrange.com.com (vpn1-7-70.ams2.redhat.com [10.36.7.70]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id p8TAYO0n010973; Thu, 29 Sep 2011 06:34:29 -0400 From: "Daniel P. Berrange" To: qemu-devel@nongnu.org Date: Thu, 29 Sep 2011 11:34:21 +0100 Message-Id: <1317292461-12291-1-git-send-email-berrange@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.12 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 209.132.183.28 Cc: Harsh Bora , "Aneesh Kumar K. V" Subject: [Qemu-devel] [PATCH] Raise 9pfs mount_tag limit from 32 to 255 bytes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: "Daniel P. Berrange" The Linux guest kernel does not appear to have a problem handling a mount_tag larger than 32 bytes. Increase the limit to 255 bytes, though perhaps it can be made larger still, or not limited at all ? Tested with a 3.0.4 kernel and a mount_tag 255 bytes in length. * hw/9pfs/virtio-9p.h: Change MAX_TAG_LEN to 255 Signed-off-by: Daniel P. Berrange --- hw/9pfs/virtio-9p.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h index 17d44b4..b133b33 100644 --- a/hw/9pfs/virtio-9p.h +++ b/hw/9pfs/virtio-9p.h @@ -144,7 +144,7 @@ struct V9fsPDU /* The ID for virtio console */ #define VIRTIO_ID_9P 9 #define MAX_REQ 128 -#define MAX_TAG_LEN 32 +#define MAX_TAG_LEN 255 #define BUG_ON(cond) assert(!(cond))