LU-12678 lnet: discard LNET_MD_PHYS

[fs/lustre-release.git] / lustre / ptlrpc / pers.c

diff --git a/lustre/ptlrpc/pers.c b/lustre/ptlrpc/pers.c
index 4566d88..1009fd5 100644 (file)
--- a/lustre/ptlrpc/pers.c
+++ b/lustre/ptlrpc/pers.c
@@ -44,22 +44,31 @@
 void ptlrpc_fill_bulk_md(struct lnet_md *md, struct ptlrpc_bulk_desc *desc,
                         int mdidx)
 {
+       unsigned int start = desc->bd_mds_off[mdidx];
+
        BUILD_BUG_ON(PTLRPC_MAX_BRW_PAGES >= LI_POISON);
 
        LASSERT(mdidx < desc->bd_md_max_brw);
        LASSERT(desc->bd_iov_count <= PTLRPC_MAX_BRW_PAGES);
-       LASSERT(!(md->options & (LNET_MD_IOVEC | LNET_MD_KIOV |
-                                LNET_MD_PHYS)));
 
-       md->length = max(0, desc->bd_iov_count - mdidx * LNET_MAX_IOV);
-       md->length = min_t(unsigned int, LNET_MAX_IOV, md->length);
+       /* just send a lnet header */
+       if (mdidx >= desc->bd_md_count) {
+               md->options |= LNET_MD_KIOV;
+               md->length = 0;
+               md->start = NULL;
+               return;
+       }
+
+       if (mdidx == (desc->bd_md_count - 1))
+               md->length = desc->bd_iov_count - start;
+       else
+               md->length = desc->bd_mds_off[mdidx + 1] - start;
 
        md->options |= LNET_MD_KIOV;
        if (desc->bd_enc_vec)
-               md->start = &desc->bd_enc_vec[mdidx *
-                                             LNET_MAX_IOV];
+               md->start = &desc->bd_enc_vec[start];
        else
-               md->start = &desc->bd_vec[mdidx * LNET_MAX_IOV];
+               md->start = &desc->bd_vec[start];
 }