IB: Include <linux/kref.h> explicitly in <rdma/ib_verbs.h>

<rdma/ib_verbs.h> uses struct kref, so it should include <linux/kref.h>
explicitly to avoid hidden include dependencies.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 0bfa3328d686..73aafd7bb503 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -45,6 +45,7 @@
 #include <linux/device.h>
 #include <linux/mm.h>
 #include <linux/dma-mapping.h>
+#include <linux/kref.h>
 
 #include <asm/atomic.h>
 #include <asm/scatterlist.h>