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vhost: fix log ctx signalling
author
Michael S. Tsirkin
<mst@redhat.com>
Wed, 22 Sep 2010 10:31:53 +0000
(12:31 +0200)
committer
Michael S. Tsirkin
<mst@redhat.com>
Wed, 22 Sep 2010 14:21:33 +0000
(16:21 +0200)
The log eventfd signalling got put in dead code.
We didn't notice because qemu currently does polling
instead of eventfd select.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/vhost/vhost.c
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diff --git
a/drivers/vhost/vhost.c
b/drivers/vhost/vhost.c
index
c579dcc
..
dd3d6f7
100644
(file)
--- a/
drivers/vhost/vhost.c
+++ b/
drivers/vhost/vhost.c
@@
-858,11
+858,12
@@
int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_log *log,
if (r < 0)
return r;
len -= l;
- if (!len)
+ if (!len) {
+ if (vq->log_ctx)
+ eventfd_signal(vq->log_ctx, 1);
return 0;
+ }
}
- if (vq->log_ctx)
- eventfd_signal(vq->log_ctx, 1);
/* Length written exceeds what we have stored. This is a bug. */
BUG();
return 0;