LU-14798 lustre: Support RDMA only pages

[fs/lustre-release.git] / lustre / osc / osc_request.c

diff --git a/lustre/osc/osc_request.c b/lustre/osc/osc_request.c
index 725dadc..b9c2e05 100644 (file)
--- a/lustre/osc/osc_request.c
+++ b/lustre/osc/osc_request.c
@@ -48,6 +48,7 @@
 #include <linux/falloc.h>
 
 #include "osc_internal.h"
+#include <lnet/lnet_rdma.h>
 
 atomic_t osc_pool_req_count;
 unsigned int osc_reqpool_maxreqcount;
@@ -1391,6 +1392,7 @@ osc_brw_prep_request(int cmd, struct client_obd *cli, struct obdo *oa,
        const char *obd_name = cli->cl_import->imp_obd->obd_name;
        struct inode *inode = NULL;
        bool directio = false;
+       bool enable_checksum = true;
 
        ENTRY;
        if (pga[0]->pg) {
@@ -1534,6 +1536,11 @@ retry_encrypt:
                }
        }
 
+       if (lnet_is_rdma_only_page(pga[0]->pg)) {
+               enable_checksum = false;
+               short_io_size = 0;
+       }
+
        /* Check if read/write is small enough to be a short io. */
        if (short_io_size > cli->cl_max_short_io_bytes || niocount > 1 ||
            !imp_connect_shortio(cli->cl_import))
@@ -1683,10 +1690,12 @@ no_bulk:
         if (osc_should_shrink_grant(cli))
                 osc_shrink_grant_local(cli, &body->oa);
 
+       if (!cli->cl_checksum || sptlrpc_flavor_has_bulk(&req->rq_flvr))
+               enable_checksum = false;
+
         /* size[REQ_REC_OFF] still sizeof (*body) */
         if (opc == OST_WRITE) {
-                if (cli->cl_checksum &&
-                    !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
+                if (enable_checksum) {
                         /* store cl_cksum_type in a local variable since
                          * it can be changed via lprocfs */
                        enum cksum_types cksum_type = cli->cl_cksum_type;
@@ -1724,8 +1733,7 @@ no_bulk:
                 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
                                      sizeof(__u32) * niocount);
         } else {
-                if (cli->cl_checksum &&
-                    !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
+                if (enable_checksum) {
                         if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
                                 body->oa.o_flags = 0;
                        body->oa.o_flags |= obd_cksum_type_pack(obd_name,