[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 1/2] virtio-blk: Acquire context while switching them on dataplan
From: |
Sergio Lopez |
Subject: |
[PATCH 1/2] virtio-blk: Acquire context while switching them on dataplane start |
Date: |
Fri, 4 Dec 2020 17:53:46 +0100 |
On dataplane start, acquire the new AIO context before calling
'blk_set_aio_context', releasing it immediately afterwards. This
prevents reaching the AIO context attach/detach notifier functions
without having acquired it first.
It was also the only place where 'blk_set_aio_context' was called with
an unprotected AIO context.
Signed-off-by: Sergio Lopez <slp@redhat.com>
---
hw/block/dataplane/virtio-blk.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c
index 37499c5564..034e43cb1f 100644
--- a/hw/block/dataplane/virtio-blk.c
+++ b/hw/block/dataplane/virtio-blk.c
@@ -214,7 +214,9 @@ int virtio_blk_data_plane_start(VirtIODevice *vdev)
vblk->dataplane_started = true;
trace_virtio_blk_data_plane_start(s);
+ aio_context_acquire(s->ctx);
r = blk_set_aio_context(s->conf->conf.blk, s->ctx, &local_err);
+ aio_context_release(s->ctx);
if (r < 0) {
error_report_err(local_err);
goto fail_guest_notifiers;
--
2.26.2
- [PATCH 1/2] virtio-blk: Acquire context while switching them on dataplane start,
Sergio Lopez <=