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

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Message-Id: <1441372118-5933-12-git-send-email-luis.henriques@canonical.com>
Date:	Fri,  4 Sep 2015 14:06:39 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Marc-André Lureau <marcandre.lureau@...hat.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 011/130] vhost: actually track log eventfd file

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@...hat.com>

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 <marcandre.lureau@...hat.com>
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 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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