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[Qemu-devel] [PULL 15/41] vhost: make vhost_log_put() idempotent
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PULL 15/41] vhost: make vhost_log_put() idempotent |
Date: |
Fri, 29 Jul 2016 06:15:57 +0300 |
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>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <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;
}
-
--
MST
- [Qemu-devel] [PULL 04/41] hw/acpi: fix a DSDT table issue when a pxb is present., (continued)
- [Qemu-devel] [PULL 04/41] hw/acpi: fix a DSDT table issue when a pxb is present., Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 05/41] acpi: refactor pxb crs computation, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 06/41] hw/apci: handle 64-bit MMIO regions correctly, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 07/41] hw/pci-bridge: Convert pxb initialization functions to Error, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 08/41] apb: convert init to realize, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 09/41] hw/virtio-pci: fix virtio behaviour, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 10/41] virtio: check vring descriptor buffer length, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 11/41] misc: indentation, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 12/41] vhost-user: minor simplification, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 13/41] vhost-user: disconnect on HUP, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 15/41] vhost: make vhost_log_put() idempotent,
Michael S. Tsirkin <=
- [Qemu-devel] [PULL 14/41] vhost: don't assume opaque is a fd, use backend cleanup, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 16/41] vhost: assert the log was cleaned up, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 17/41] vhost: fix cleanup on not fully initialized device, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 18/41] vhost: make vhost_dev_cleanup() idempotent, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 19/41] vhost-net: always call vhost_dev_cleanup() on failure, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 20/41] vhost: fix calling vhost_dev_cleanup() after vhost_dev_init(), Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 22/41] vhost: add missing VHOST_OPS_DEBUG, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 21/41] vhost: do not assert() on vhost_ops failure, Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 23/41] vhost: use error_report() instead of fprintf(stderr, ...), Michael S. Tsirkin, 2016/07/28
- [Qemu-devel] [PULL 24/41] qemu-char: fix qemu_chr_fe_set_msgfds() crash when disconnected, Michael S. Tsirkin, 2016/07/28