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[Qemu-devel] [PATCH v6 05/33] vhost: make vhost_log_put() idempotent
From: |
marcandre . lureau |
Subject: |
[Qemu-devel] [PATCH v6 05/33] vhost: make vhost_log_put() idempotent |
Date: |
Wed, 27 Jul 2016 01:14:59 +0400 |
From: Marc-André Lureau <address@hidden>
Although not strictly required, it is nice to have vhost_log_put()
safely callable multiple times.
Clear dev->log* when calling vhost_log_put() to make the function
idempotent. This also simplifies a bit the caller work.
Signed-off-by: Marc-André Lureau <address@hidden>
---
hw/virtio/vhost.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 429499a..9bac163 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -362,6 +362,8 @@ static void vhost_log_put(struct vhost_dev *dev, bool sync)
if (!log) {
return;
}
+ dev->log = NULL;
+ dev->log_size = 0;
--log->refcnt;
if (log->refcnt == 0) {
@@ -710,8 +712,6 @@ static int vhost_migration_log(MemoryListener *listener,
int enable)
return r;
}
vhost_log_put(dev, false);
- dev->log = NULL;
- dev->log_size = 0;
} else {
vhost_dev_log_resize(dev, vhost_get_log_size(dev));
r = vhost_dev_set_log(dev, true);
@@ -1328,7 +1328,4 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice
*vdev)
vhost_log_put(hdev, true);
hdev->started = false;
- hdev->log = NULL;
- hdev->log_size = 0;
}
-
--
2.9.0
- [Qemu-devel] [PATCH v6 00/33] vhost-user reconnect fixes, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 01/33] misc: indentation, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 02/33] vhost-user: minor simplification, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 03/33] vhost-user: disconnect on HUP, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 04/33] vhost: don't assume opaque is a fd, use backend cleanup, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 05/33] vhost: make vhost_log_put() idempotent,
marcandre . lureau <=
- [Qemu-devel] [PATCH v6 06/33] vhost: assert the log was cleaned up, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 07/33] vhost: fix cleanup on not fully initialized device, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 08/33] vhost: make vhost_dev_cleanup() idempotent, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 09/33] vhost-net: always call vhost_dev_cleanup() on failure, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 10/33] vhost: fix calling vhost_dev_cleanup() after vhost_dev_init(), marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 11/33] vhost: do not assert() on vhost_ops failure, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 12/33] vhost: add missing VHOST_OPS_DEBUG, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 14/33] qemu-char: fix qemu_chr_fe_set_msgfds() crash when disconnected, marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 13/33] vhost: use error_report() instead of fprintf(stderr, ...), marcandre . lureau, 2016/07/26
- [Qemu-devel] [PATCH v6 15/33] vhost-user: call set_msgfds unconditionally, marcandre . lureau, 2016/07/26