[PATCH 2/2] tcm_vhost: Wait for pending requests in vhost_scsi_clear_endpoint()
From: Asias He <hidden>
Date: 2013-03-11 05:09:39
Also in:
kvm
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
Wait for termination of all pending requests in clear endpoint operation, otherwise you cannot reset virtio devices safely. Signed-off-by: Asias He <redacted> --- drivers/vhost/tcm_vhost.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 5f8342c..4b0cb12 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c@@ -1152,9 +1152,13 @@ static int vhost_scsi_clear_endpoint( tv_tpg->tv_tpg_vhost_count--; tv_tpg->vhost_scsi = NULL; vs->vs_tpg[target] = NULL; + /* After this, no further requests can be queued */ vs->vs_endpoint = false; mutex_unlock(&tv_tpg->tv_tpg_mutex); } + /* Flush the pending requests and wait for them to finish */ + vhost_scsi_flush(vs); + mutex_unlock(&vs->dev.mutex); return 0;
--
1.8.1.4