LU-10664 dom: non-blocking enqueue for DOM locks

[fs/lustre-release.git] / lustre / mdt / mdt_handler.c

diff --git a/lustre/mdt/mdt_handler.c b/lustre/mdt/mdt_handler.c
index 65c956b..c7aea8d 100644 (file)
--- a/lustre/mdt/mdt_handler.c
+++ b/lustre/mdt/mdt_handler.c
@@ -4683,6 +4683,23 @@ static int mdt_intent_policy(const struct lu_env *env,
                } else {
                        rc = err_serious(-EFAULT);
                }
+       } else if (ldesc->l_resource.lr_type == LDLM_IBITS &&
+                  ldesc->l_policy_data.l_inodebits.bits == MDS_INODELOCK_DOM) {
+               struct ldlm_reply *rep;
+
+               /* No intent was provided but INTENT flag is set along with
+                * DOM bit, this is considered as GLIMPSE request.
+                * This logic is common for MDT and OST glimpse
+                */
+               mdt_ptlrpc_stats_update(req, IT_GLIMPSE);
+               rc = mdt_glimpse_enqueue(info, ns, lockp, flags);
+               /* Check whether the reply has been packed successfully. */
+               if (req->rq_repmsg != NULL) {
+                       rep = req_capsule_server_get(info->mti_pill,
+                                                    &RMF_DLM_REP);
+                       rep->lock_policy_res2 =
+                               ptlrpc_status_hton(rep->lock_policy_res2);
+               }
        } else {
                /* No intent was provided */
                req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);