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[Qemu-block] [PATCH v2 11/16] virtio-scsi: Request BLK_PERM_AIO_CONTEXT_


From: Fam Zheng
Subject: [Qemu-block] [PATCH v2 11/16] virtio-scsi: Request BLK_PERM_AIO_CONTEXT_CHANGE for dataplane
Date: Wed, 19 Apr 2017 17:43:51 +0800

blk_set_aio_context is audited by perm API, so follow the protocol and
request for permission first.

Signed-off-by: Fam Zheng <address@hidden>
---
 hw/scsi/virtio-scsi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
index bd62d08..d130ba3 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -794,6 +794,10 @@ static void virtio_scsi_hotplug(HotplugHandler 
*hotplug_dev, DeviceState *dev,
             return;
         }
         virtio_scsi_acquire(s);
+        if (!blk_request_perm(sd->conf.blk, BLK_PERM_AIO_CONTEXT_CHANGE, 
errp)) {
+            virtio_scsi_release(s);
+            return;
+        }
         blk_set_aio_context(sd->conf.blk, s->ctx);
         virtio_scsi_release(s);
 
-- 
2.9.3




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