From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:58170 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753102AbdCHNMS (ORCPT ); Wed, 8 Mar 2017 08:12:18 -0500 Subject: Patch "mm balloon: umount balloon_mnt when removing vb device" has been added to the 4.10-stable tree To: xieyisheng1@huawei.com, akpm@linux-foundation.org, aquini@redhat.com, gi-oh.kim@profitbricks.com, gregkh@linuxfoundation.org, guohanjun@huawei.com, jasowang@redhat.com, koct9i@gmail.com, mhocko@kernel.org, minchan@kernel.org, mst@redhat.com, qiuxishi@huawei.com, torvalds@linux-foundation.org, vbabka@suse.cz Cc: , From: Date: Wed, 08 Mar 2017 14:11:35 +0100 Message-ID: <1488978695216164@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled mm balloon: umount balloon_mnt when removing vb device to the 4.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mm-balloon-umount-balloon_mnt-when-removing-vb-device.patch and it can be found in the queue-4.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 9c57b5808c625f4fc93da330b932647eaff321f7 Mon Sep 17 00:00:00 2001 From: Yisheng Xie Date: Fri, 24 Feb 2017 15:00:40 -0800 Subject: mm balloon: umount balloon_mnt when removing vb device From: Yisheng Xie commit 9c57b5808c625f4fc93da330b932647eaff321f7 upstream. With CONFIG_BALLOON_COMPACTION=y the kernel will mount balloon_mnt for balloon page migration when we probe a virtio_balloon device. However we do not unmount it when removing the device. Fix this. Fixes: b1123ea6d3b3 ("mm: balloon: use general non-lru movable page feature") Link: http://lkml.kernel.org/r/1486531318-35189-1-git-send-email-xieyisheng1@huawei.com Signed-off-by: Yisheng Xie Acked-by: Minchan Kim Cc: Rafael Aquini Cc: Konstantin Khlebnikov Cc: Gioh Kim Cc: Vlastimil Babka Cc: Michal Hocko Cc: Michael S. Tsirkin Cc: Jason Wang Cc: Hanjun Guo Cc: Xishi Qiu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- drivers/virtio/virtio_balloon.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -615,8 +615,12 @@ static void virtballoon_remove(struct vi cancel_work_sync(&vb->update_balloon_stats_work); remove_common(vb); +#ifdef CONFIG_BALLOON_COMPACTION if (vb->vb_dev_info.inode) iput(vb->vb_dev_info.inode); + + kern_unmount(balloon_mnt); +#endif kfree(vb); } Patches currently in stable-queue which might be from xieyisheng1@huawei.com are queue-4.10/mm-balloon-umount-balloon_mnt-when-removing-vb-device.patch