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| author | Michael S. Tsirkin <mst@redhat.com> | 2012-12-06 13:03:34 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2012-12-06 16:09:18 +0100 |
| commit | 935cdee7ee159569b0aaa10bd9244660f6672b08 (patch) | |
| tree | 366e06bee572c2578fcce51926a8ae25e04ce66d /drivers/vhost/vhost.h | |
| parent | tools:virtio: fix compilation warning (diff) | |
| download | linux-935cdee7ee159569b0aaa10bd9244660f6672b08.tar.xz linux-935cdee7ee159569b0aaa10bd9244660f6672b08.zip | |
vhost: avoid backend flush on vring ops
vring changes already do a flush internally where appropriate, so we do
not need a second flush.
It's currently not very expensive but a follow-up patch makes flush more
heavy-weight, so remove the extra flush here to avoid regressing
performance if call or kick fds are changed on data path.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vhost.h')
| -rw-r--r-- | drivers/vhost/vhost.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 5e19e3d5db8c..2639c58b23ab 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -164,7 +164,8 @@ long vhost_dev_check_owner(struct vhost_dev *); long vhost_dev_reset_owner(struct vhost_dev *); void vhost_dev_cleanup(struct vhost_dev *, bool locked); void vhost_dev_stop(struct vhost_dev *); -long vhost_dev_ioctl(struct vhost_dev *, unsigned int ioctl, unsigned long arg); +long vhost_dev_ioctl(struct vhost_dev *, unsigned int ioctl, void __user *argp); +long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp); int vhost_vq_access_ok(struct vhost_virtqueue *vq); int vhost_log_access_ok(struct vhost_dev *); |