LU-13599 mdt: add test for rs_lock limit exceeding

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

diff --git a/lustre/mdt/mdt_reint.c b/lustre/mdt/mdt_reint.c
index ad225ae..35eac50 100644 (file)
--- a/lustre/mdt/mdt_reint.c
+++ b/lustre/mdt/mdt_reint.c
@@ -1801,15 +1801,20 @@ static int mdt_link_parents_lock(struct mdt_thread_info *info,
 
        EXIT;
 out:
-       if (rc)
+       if (rc) {
                mdt_unlock_list(info, link_locks, rc);
-       else if (local_lnkp_cnt > RS_MAX_LOCKS - 6)
+       } else if (local_lnkp_cnt > RS_MAX_LOCKS - 5) {
+               CDEBUG(D_INFO, "Too many links (%d), sync operations\n",
+                      local_lnkp_cnt);
                /*
                 * parent may have 3 local objects: master object and 2 stripes
-                * (if it's being migrated too); source may have 2 local
-                * objects: master and 1 stripe; target has 1 local object.
+                * (if it's being migrated too); source may have 1 local objects
+                * as regular file; target has 1 local object.
+                * Note, source may have 2 local locks if it is directory but it
+                * can't have hardlinks, so it is not considered here.
                 */
                rc = 1;
+       }
        return rc;
 }