[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH] xen/balloon: fix cancelled balloon action
- To: Juergen Gross <jgross@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Date: Tue, 5 Oct 2021 21:11:41 -0400
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=YDorkgV8Tn0yuTU7JoLBMjLy5LntqUHBOqBVAOnX2W4=; b=ibrnUAa0coErFGcKgP3KcvmUnMfZTEjUiMKy+zXZoNk+xgGFSbJ6A1yOVNjG0wtAMwT8dYNa8IlHlooZa1CQUx0bVMC2cWQuPvkdPUYFpoxPTKIxS3Wd+AIZIg7pzYtsZ34XTtcIPu9SDLLwXYRA1OiVF6CxmYDAdPHt705tfftwWgzKirq0pt0q4Up28eVcqFY5i9ImbVX4ROLN2ncuvLfHjfg8IGpyonzXDiHJd9SXobIt3pso/2eaq1jaX5LDypKaxqZqDUvKElsocaNLpuKPWo3FtRQQfpM9WqOu+numAk9tKoD1zFzqlLH60CXacKlUqUg62KeySa0zz2hW9w==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=BWbCYa10xmwuUdFbIvceXpYWgt3qnP7RqhD1UmHqtVfnaV2Y9tnJvF+aRxGcyMSG8MaYPqy8STPo30z4qAqXKr4T/OoJQb1kveKTHxl4N4OyjlLRpm8+sFavp+yzYPwQ8emR/kDmpm29BpgeqgEJI38w5/5Hg67IPfOeMBSpTGuXNp0TvnLoNDUxai9lQwOTHwnsaSvW9ymlenNHi3lOiRSo9S9mFSlHfgELUFuzCdtXeTuiI7BvO2ATPeCrnNf+//1hKlO82/KbqVXn9RwQ8NUregMfg+rhwfL4jIGAajdBI7io/p4F/uffMQWpaxnoMAm4hIqrH39mhIugMjMJxw==
- Authentication-results: invisiblethingslab.com; dkim=none (message not signed) header.d=none;invisiblethingslab.com; dmarc=none action=none header.from=oracle.com;
- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, stable@xxxxxxxxxxxxxxx, Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Wed, 06 Oct 2021 01:12:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 10/5/21 9:34 AM, Juergen Gross wrote:
> In case a ballooning action is cancelled the new kernel thread handling
> the ballooning might end up in a busy loop.
>
> Fix that by handling the cancelled action gracefully.
>
> While at it introduce a short wait for the BP_WAIT case.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 8480ed9c2bbd56 ("xen/balloon: use a kernel thread instead a workqueue")
> Reported-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
|
