From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([222.73.24.84]:20425 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756539Ab2EUCYR (ORCPT ); Sun, 20 May 2012 22:24:17 -0400 Received: from mailserver.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id q4L2OENB032420 for ; Mon, 21 May 2012 10:24:15 +0800 From: Liu Bo To: Subject: [PATCH 1/2 v2] Btrfs: do not resize a seeding device Date: Mon, 21 May 2012 10:28:38 +0800 Message-Id: <1337567319-1657-1-git-send-email-liubo2009@cn.fujitsu.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: Seeding devices are not supposed to change any more. Signed-off-by: Liu Bo --- v1->v2: use EINVAL instead, suggested by David Sterba fs/btrfs/ioctl.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index f056469..ec2245d 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1303,6 +1303,13 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root, ret = -EINVAL; goto out_free; } + if (device->fs_devices && device->fs_devices->seeding) { + printk(KERN_INFO "btrfs: resizer unable to apply on " + "seeding device %s\n", device->name); + ret = -EINVAL; + goto out_free; + } + if (!strcmp(sizestr, "max")) new_size = device->bdev->bd_inode->i_size; else { -- 1.6.5.2