From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753372AbdDKTYU (ORCPT ); Tue, 11 Apr 2017 15:24:20 -0400 Received: from smtp-fw-33001.amazon.com ([207.171.190.10]:50947 "EHLO smtp-fw-33001.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752728AbdDKTYS (ORCPT ); Tue, 11 Apr 2017 15:24:18 -0400 X-IronPort-AV: E=Sophos;i="5.37,186,1488844800"; d="scan'208";a="665566874" Date: Tue, 11 Apr 2017 12:24:09 -0700 From: Marc Olson To: CC: Konrad Rzeszutek Wilk , Roger Pau =?iso-8859-1?Q?Monn=E9?= , Boris Ostrovsky , David Vrabel , Subject: [PATCH] blkfront: add uevent for size change Message-ID: <20170411192403.GA26778@amazon.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-Originating-IP: [10.43.160.19] X-ClientProxiedBy: EX13D05UWB002.ant.amazon.com (10.43.161.50) To EX13D16UWC004.ant.amazon.com (10.43.162.72) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When a blkfront device is resized from dom0, emit a KOBJ_CHANGE uevent to notify the guest about the change. This allows for custom udev rules, such as automatically resizing a filesystem, when an event occurs. Signed-off-by: Marc Olson --- drivers/block/xen-blkfront.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 2fee2ee..66abf9c 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -1996,6 +1996,7 @@ static void blkfront_connect(struct blkfront_info *info) unsigned long sector_size; unsigned int physical_sector_size; unsigned int binfo; + char *envp[] = { "RESIZE=1", NULL }; int err; switch (info->connected) { @@ -2012,6 +2013,8 @@ static void blkfront_connect(struct blkfront_info *info) sectors); set_capacity(info->gd, sectors); revalidate_disk(info->gd); + kobject_uevent_env(&disk_to_dev(info->gd)->kobj, + KOBJ_CHANGE, envp); return; case BLKIF_STATE_SUSPENDED: -- 2.7.4