[PATCH 3.13.y-ckt 41/60] vhost: actually track log eventfd file

Kamal Mostafa kamal at canonical.com
Wed Sep 2 00:57:47 UTC 2015


3.13.11-ckt26 -stable review patch.  If anyone has any objections, please let me know.

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

From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau at redhat.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 at redhat.com>
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/vhost/vhost.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 69068e0..384bcc8 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -878,6 +878,7 @@ 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;
-- 
1.9.1





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