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authorAsias He <asias@redhat.com>2013-04-27 07:16:49 +0400
committerMichael S. Tsirkin <mst@redhat.com>2013-05-01 11:02:51 +0400
commitf2f0173d6a95fa60e7934f62ce27d6bd24e4e09c (patch)
tree9b875c3e325d3cdc6c0ddd0cfa198e8e6deff9b0 /drivers/iommu/msm_iommu.c
parent3ab2e420ec1caf4ead233f3161ac7d86fe5d2a9f (diff)
downloadlinux-f2f0173d6a95fa60e7934f62ce27d6bd24e4e09c.tar.xz
tcm_vhost: Wait for pending requests in vhost_scsi_flush()
Unlike tcm_vhost_evt requests, tcm_vhost_cmd requests are passed to the target core system, we can not make sure all the pending requests will be finished by flushing the virt queue. In this patch, we do refcount for every tcm_vhost_cmd requests to make vhost_scsi_flush() wait for all the pending requests issued before the flush operation to be finished. This is useful when we call vhost_scsi_clear_endpoint() to stop tcm_vhost. No new requests will be passed to target core system because we clear the endpoint by setting vs_tpg to NULL. And we wait for all the old requests. These guarantee no requests will be leaked and existing requests will be completed. Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/iommu/msm_iommu.c')
0 files changed, 0 insertions, 0 deletions