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-rw-r--r--include/linux/virtio_ring.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index f3fa55bdd6ce..a156e2b6ccfe 100644
--- a/include/linux/virtio_ring.h
+++ b/include/linux/virtio_ring.h
@@ -45,6 +45,17 @@ static inline void virtio_wmb(bool weak_barriers)
wmb();
}
+static inline void virtio_store_mb(bool weak_barriers,
+ __virtio16 *p, __virtio16 v)
+{
+ if (weak_barriers) {
+ virt_store_mb(*p, v);
+ } else {
+ WRITE_ONCE(*p, v);
+ mb();
+ }
+}
+
struct virtio_device;
struct virtqueue;