From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Hajnoczi <stefanha@redhat.com>
Subject: [PATCH] virtio-blk: handle block_device_operations callbacks after hot unplug
Date: Thu, 23 Apr 2020 13:37:17 +0100
Message-ID: <20200423123717.139141-1-stefanha@redhat.com>
Mime-Version: 1.0
Content-Transfer-Encoding: base64
Return-path: <linux-kernel-owner@vger.kernel.org>
Sender: linux-kernel-owner@vger.kernel.org
To: virtualization@lists.linux-foundation.org
Cc: Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>, Jason Wang <jasowang@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Lance Digby <ldigby@redhat.com>
List-Id: virtualization@lists.linuxfoundation.org
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