LU-15914 lnet: Fix null md deref for finalized message

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

diff --git a/lustre/include/obd_cksum.h b/lustre/include/obd_cksum.h
index 103905f..029d1a7 100644 (file)
--- a/lustre/include/obd_cksum.h
+++ b/lustre/include/obd_cksum.h
@@ -27,7 +27,6 @@
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
 #ifndef __OBD_CKSUM
@@ -122,6 +121,13 @@ enum cksum_types obd_cksum_type_select(const char *obd_name,
        if (preferred & cksum_types)
                return preferred;
 
+       /*
+        * Server reporting a single T10 checksum type
+        * means the target actually supports T10-PI.
+        */
+       if (hweight32(cksum_types & OBD_CKSUM_T10_ALL) == 1)
+               return cksum_types & OBD_CKSUM_T10_ALL;
+
        flag = obd_cksum_type_pack(obd_name, cksum_types);
 
        return obd_cksum_type_unpack(flag);