LU-3285 mds: add IO locking to the MDC and MDT

[fs/lustre-release.git] / lustre / include / lustre_dlm.h

diff --git a/lustre/include/lustre_dlm.h b/lustre/include/lustre_dlm.h
index 2d0952e..5f1dc20 100644 (file)
--- a/lustre/include/lustre_dlm.h
+++ b/lustre/include/lustre_dlm.h
@@ -842,7 +842,9 @@ struct ldlm_lock {
 
        /** Private storage for lock user. Opaque to LDLM. */
        void                    *l_ast_data;
-
+       /* separate ost_lvb used mostly by Data-on-MDT for now.
+        * It is introduced to don't mix with layout lock data. */
+       struct ost_lvb           l_ost_lvb;
        /*
         * Server-side-only members.
         */
@@ -1011,6 +1013,12 @@ static inline bool ldlm_has_layout(struct ldlm_lock *lock)
                lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_LAYOUT;
 }
 
+static inline bool ldlm_has_dom(struct ldlm_lock *lock)
+{
+       return lock->l_resource->lr_type == LDLM_IBITS &&
+               lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_DOM;
+}
+
 static inline char *
 ldlm_ns_name(struct ldlm_namespace *ns)
 {