LU-5092 nodemap: transfer nodemaps between MGS, MDTs, and OSTs

[fs/lustre-release.git] / lustre / obdclass / dt_object.c

diff --git a/lustre/obdclass/dt_object.c b/lustre/obdclass/dt_object.c
index 2c13a3c..2a9016f 100644 (file)
--- a/lustre/obdclass/dt_object.c
+++ b/lustre/obdclass/dt_object.c
@@ -803,7 +803,8 @@ out:
  * \param obj - is the index object to parse
  * \param rdpg - is the lu_rdpg descriptor associated with the transfer
  * \param filler - is the callback function responsible for filling a lu_page
- *                 with key/record pairs in the format wanted by the caller
+ *                 with key/record pairs in the format wanted by the caller.
+ *                 If NULL, uses dt_index_page_build
  * \param arg    - is an opaq argument passed to the filler function
  *
  * \retval sum (in bytes) of all filled lu_pages
@@ -822,6 +823,9 @@ int dt_index_walk(const struct lu_env *env, struct dt_object *obj,
        LASSERT(rdpg->rp_pages != NULL);
        LASSERT(obj->do_index_ops != NULL);
 
+       if (filler == NULL)
+               filler = dt_index_page_build;
+
        nob = rdpg->rp_count;
        if (nob == 0)
                RETURN(-EFAULT);