LU-2275 mdt: Avoid setting positive dispositions too early

[fs/lustre-release.git] / lustre / lmv / lmv_fld.c

diff --git a/lustre/lmv/lmv_fld.c b/lustre/lmv/lmv_fld.c
index a43eb64..62eb0d7 100644 (file)
--- a/lustre/lmv/lmv_fld.c
+++ b/lustre/lmv/lmv_fld.c
@@ -26,15 +26,14 @@
 /*
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2013, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
  * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
 #define DEBUG_SUBSYSTEM S_LMV
 #ifdef __KERNEL__
 #include <linux/slab.h>
@@ -66,7 +65,17 @@ int lmv_fld_lookup(struct lmv_obd *lmv,
         ENTRY;
 
         LASSERT(fid_is_sane(fid));
-        rc = fld_client_lookup(&lmv->lmv_fld, fid_seq(fid), mds,
+
+       /* FIXME: Because ZFS still use LOCAL fid sequence for root,
+        * and root will always be in MDT0, for local fid, it will
+        * return 0 directly. And it should be removed once the root
+        * FID has been assigned with special sequence */
+       if (fid_seq(fid) == FID_SEQ_LOCAL_FILE) {
+               *mds = 0;
+               RETURN(0);
+       }
+
+       rc = fld_client_lookup(&lmv->lmv_fld, fid_seq(fid), mds,
                                LU_SEQ_RANGE_MDT, NULL);
         if (rc) {
                 CERROR("Error while looking for mds number. Seq "LPX64