LU-13055 mdd: per-user changelog names and mask

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

diff --git a/lustre/obdclass/llog_swab.c b/lustre/obdclass/llog_swab.c
index 307ce65..67c0ce6 100644 (file)
--- a/lustre/obdclass/llog_swab.c
+++ b/lustre/obdclass/llog_swab.c
@@ -202,21 +202,28 @@ void lustre_swab_llog_rec(struct llog_rec_hdr *rec)
                 * Because the tail follows a variable-length structure we need
                 * to compute its location at runtime
                 */
-               tail = (struct llog_rec_tail *)((char *)&cr->cr +
-                                               changelog_rec_size(&cr->cr) +
-                                               cr->cr.cr_namelen);
+               tail = (struct llog_rec_tail *)((char *)rec +
+                                               rec->lrh_len - sizeof(*tail));
                break;
        }
 
        case CHANGELOG_USER_REC:
+       case CHANGELOG_USER_REC2:
        {
-               struct llog_changelog_user_rec *cur =
-                       (struct llog_changelog_user_rec *)rec;
+               struct llog_changelog_user_rec2 *cur =
+                       (struct llog_changelog_user_rec2 *)rec;
 
                __swab32s(&cur->cur_id);
                __swab64s(&cur->cur_endrec);
                __swab32s(&cur->cur_time);
-               tail = &cur->cur_tail;
+               if (cur->cur_hdr.lrh_type == CHANGELOG_USER_REC2) {
+                       __swab32s(&cur->cur_mask);
+                       BUILD_BUG_ON(offsetof(typeof(*cur), cur_padding1) == 0);
+                       BUILD_BUG_ON(offsetof(typeof(*cur), cur_padding2) == 0);
+                       BUILD_BUG_ON(offsetof(typeof(*cur), cur_padding3) == 0);
+               }
+               tail = (struct llog_rec_tail *)((char *)rec +
+                                               rec->lrh_len - sizeof(*tail));
                break;
        }