[PATCH 3.16.y-ckt 011/130] vhost: actually track log eventfd file

From: Luis Henriques
Date: Fri Sep 04 2015 - 09:57:40 EST

3.16.7-ckt17 -stable review patch. If anyone has any objections, please let me know.


From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@xxxxxxxxxx>

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-Andrà Lureau <marcandre.lureau@xxxxxxxxxx>
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
drivers/vhost/vhost.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index c90f4374442a..1fe2c8115be0 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -882,6 +882,7 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp)
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;
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