LU-9165 pfl: MDS handling of write intent IT_LAYOUT RPC

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

diff --git a/lustre/include/dt_object.h b/lustre/include/dt_object.h
index 038095c..f8e63c6 100644 (file)
--- a/lustre/include/dt_object.h
+++ b/lustre/include/dt_object.h
@@ -1026,6 +1026,40 @@ struct dt_object_operations {
         * \retval negative     negated errno on error
         */
        int   (*do_invalidate)(const struct lu_env *env, struct dt_object *dt);
+
+       /**
+        * Declare intention to instaintiate extended layout component.
+        *
+        * \param[in] env       execution environment
+        * \param[in] dt        DT object
+        * \param[in] layout    data structure to describe the changes to
+        *                      the DT object's layout
+        * \param[in] buf       buffer containing client's lovea or empty
+        *
+        * \retval 0            success
+        * \retval -ne          error code
+        */
+       int (*do_declare_layout_change)(const struct lu_env *env,
+                                       struct dt_object *dt,
+                                       struct layout_intent *layout,
+                                       const struct lu_buf *buf,
+                                       struct thandle *th);
+
+       /**
+        * Client is trying to write to un-instantiated layout component.
+        *
+        * \param[in] env       execution environment
+        * \param[in] dt        DT object
+        * \param[in] layout    data structure to describe the changes to
+        *                      the DT object's layout
+        * \param[in] buf       buffer containing client's lovea or empty
+        *
+        * \retval 0            success
+        * \retval -ne          error code
+        */
+       int (*do_layout_change)(const struct lu_env *env, struct dt_object *dt,
+                               struct layout_intent *layout,
+                               const struct lu_buf *buf, struct thandle *th);
 };
 
 /**
@@ -2712,6 +2746,30 @@ static inline int dt_lookup(const struct lu_env *env,
         return ret;
 }
 
+static inline int dt_declare_layout_change(const struct lu_env *env,
+                                          struct dt_object *o,
+                                          struct layout_intent *layout,
+                                          const struct lu_buf *buf,
+                                          struct thandle *th)
+{
+       LASSERT(o);
+       LASSERT(o->do_ops);
+       LASSERT(o->do_ops->do_declare_layout_change);
+       return o->do_ops->do_declare_layout_change(env, o, layout, buf, th);
+}
+
+static inline int dt_layout_change(const struct lu_env *env,
+                                  struct dt_object *o,
+                                  struct layout_intent *layout,
+                                  const struct lu_buf *buf,
+                                  struct thandle *th)
+{
+       LASSERT(o);
+       LASSERT(o->do_ops);
+       LASSERT(o->do_ops->do_layout_change);
+       return o->do_ops->do_layout_change(env, o, layout, buf, th);
+}
+
 struct dt_find_hint {
        struct lu_fid        *dfh_fid;
        struct dt_device     *dfh_dt;