LU-9026 o2iblnd: Adapt to the removal of ib_get_dma_mr()

[fs/lustre-release.git] / lnet / autoconf / lustre-lnet.m4

diff --git a/lnet/autoconf/lustre-lnet.m4 b/lnet/autoconf/lustre-lnet.m4
index a1fdb5e..32167d5 100644 (file)
--- a/lnet/autoconf/lustre-lnet.m4
+++ b/lnet/autoconf/lustre-lnet.m4
@@ -427,6 +427,27 @@ AS_IF([test $ENABLEO2IB != "no"], [
                        [ib_alloc_fast_reg_mr is defined])
        ])
 
+       # 4.9 must stop using ib_get_dma_mr and the global MR
+       # We then have to use FMR/Fastreg for all RDMA.
+       LB_CHECK_COMPILE([if 'ib_get_dma_mr' exists],
+       ib_get_dma_mr, [
+               #ifdef HAVE_COMPAT_RDMA
+               #undef PACKAGE_NAME
+               #undef PACKAGE_TARNAME
+               #undef PACKAGE_VERSION
+               #undef PACKAGE_STRING
+               #undef PACKAGE_BUGREPORT
+               #undef PACKAGE_URL
+               #include <linux/compat-2.6.h>
+               #endif
+               #include <rdma/ib_verbs.h>
+       ],[
+               ib_get_dma_mr(NULL, 0);
+       ],[
+               AC_DEFINE(HAVE_IB_GET_DMA_MR, 1,
+                       [ib_get_dma_mr is defined])
+       ])
+
        # In v4.4 Linux kernel,
        # commit e622f2f4ad2142d2a613a57fb85f8cf737935ef5
        # split up struct ib_send_wr so that all non-trivial verbs