From: Mike Christie <michael.christie@oracle.com>
To: target-devel@vger.kernel.org, linux-scsi@vger.kernel.org,
stefanha@redhat.com, pbonzini@redhat.com, jasowang@redhat.com,
mst@redhat.com, sgarzare@redhat.com,
virtualization@lists.linux-foundation.org
Subject: [PATCH 2/5] vhost-scsi: remove extra flushes
Date: Tue, 25 May 2021 12:47:30 -0500 [thread overview]
Message-ID: <20210525174733.6212-3-michael.christie@oracle.com> (raw)
In-Reply-To: <20210525174733.6212-1-michael.christie@oracle.com>
The vhost work flush function was flushing the entire work queue, so
there is no need for the double vhost_work_dev_flush calls in
vhost_scsi_flush.
And we do not need to call vhost_poll_flush for each poller because
that call also ends up flushing the same work queue thread the
vhost_work_dev_flush call flushed.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
---
drivers/vhost/scsi.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 051a7f8dadba..2f9633ef26aa 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -1445,11 +1445,6 @@ static void vhost_scsi_handle_kick(struct vhost_work *work)
vhost_scsi_handle_vq(vs, vq);
}
-static void vhost_scsi_flush_vq(struct vhost_scsi *vs, int index)
-{
- vhost_poll_flush(&vs->vqs[index].vq.poll);
-}
-
/* Callers must hold dev mutex */
static void vhost_scsi_flush(struct vhost_scsi *vs)
{
@@ -1468,9 +1463,6 @@ static void vhost_scsi_flush(struct vhost_scsi *vs)
kref_put(&old_inflight[i]->kref, vhost_scsi_done_inflight);
/* Flush both the vhost poll and vhost work */
- for (i = 0; i < VHOST_SCSI_MAX_VQ; i++)
- vhost_scsi_flush_vq(vs, i);
- vhost_work_dev_flush(&vs->dev);
vhost_work_dev_flush(&vs->dev);
/* Wait for all reqs issued before the flush to be finished */
--
2.25.1
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next prev parent reply other threads:[~2021-05-25 17:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-25 17:47 vhost: coding style and flush cleanups Mike Christie
2021-05-25 17:47 ` [PATCH 1/5] vhost: remove work arg from vhost_work_flush Mike Christie
2021-05-27 13:22 ` Stefano Garzarella
2021-05-25 17:47 ` Mike Christie [this message]
2021-05-25 17:47 ` [PATCH 3/5] vhost-scsi: reduce flushes during endpoint clearing Mike Christie
2021-05-25 17:47 ` [PATCH 4/5] vhost: fix poll coding style Mike Christie
2021-05-25 17:47 ` [PATCH 5/5] vhost: fix up vhost_work " Mike Christie
2021-05-27 13:23 ` Stefano Garzarella
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