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authorDavid S. Miller <davem@davemloft.net>2011-01-14 12:41:47 -0800
committerDavid S. Miller <davem@davemloft.net>2011-01-14 12:41:47 -0800
commitb7e2041e2a184e3221970eaacf56724369e56bd9 (patch)
tree005c996c0f96951818d72e380c8c5fc716b48f07 /drivers
parent92d76e81b9df5f33b0c9e2091e892560a437a15f (diff)
parent0174b0c30a9de25dcb0d3049defcfad0c2947a36 (diff)
Merge branch 'vhost-net' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Diffstat (limited to 'drivers')
-rw-r--r--drivers/vhost/vhost.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 38244f59cdd..ade0568c07a 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -97,22 +97,26 @@ void vhost_poll_stop(struct vhost_poll *poll)
remove_wait_queue(poll->wqh, &poll->wait);
}
+static bool vhost_work_seq_done(struct vhost_dev *dev, struct vhost_work *work,
+ unsigned seq)
+{
+ int left;
+ spin_lock_irq(&dev->work_lock);
+ left = seq - work->done_seq;
+ spin_unlock_irq(&dev->work_lock);
+ return left <= 0;
+}
+
static void vhost_work_flush(struct vhost_dev *dev, struct vhost_work *work)
{
unsigned seq;
- int left;
int flushing;
spin_lock_irq(&dev->work_lock);
seq = work->queue_seq;
work->flushing++;
spin_unlock_irq(&dev->work_lock);
- wait_event(work->done, ({
- spin_lock_irq(&dev->work_lock);
- left = seq - work->done_seq <= 0;
- spin_unlock_irq(&dev->work_lock);
- left;
- }));
+ wait_event(work->done, vhost_work_seq_done(dev, work, seq));
spin_lock_irq(&dev->work_lock);
flushing = --work->flushing;
spin_unlock_irq(&dev->work_lock);