[PATCH 3.2 106/110] vhost: actually track log eventfd file

3.2.71-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Marc-André Lureau <redacted>

commit 7932c0bd7740f4cd2aa168d3ce0199e7af7d72d5 upstream.

While reviewing vhost log code, I found out that log_file is never
set. Note: I haven't tested the change (QEMU doesn't use LOG_FD yet).

Signed-off-by: Marc-André Lureau <redacted>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Ben Hutchings <redacted>
---
 drivers/vhost/vhost.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c

@@ -883,6 +883,7 @@ long vhost_dev_ioctl(struct vhost_dev *d
 		}
 		if (eventfp != d->log_file) {
 			filep = d->log_file;
+			d->log_file = eventfp;
 			ctx = d->log_ctx;
 			d->log_ctx = eventfp ?
 				eventfd_ctx_fileget(eventfp) : NULL;