tdb: avoid many fcntl calls when incrementing seqnum

Signed-off-by: Bob Campbell <bobcampbell@catalyst.net.nz>
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sun Jul  3 18:11:30 CEST 2016 on sn-devel-144

diff --git a/lib/tdb/common/tdb.c b/lib/tdb/common/tdb.c
index 9885d8cfc9dff95264f547d211f665f093e62497..dd9368015396243b61ce9ca83bcc591772a5fda6 100644 (file)
--- a/lib/tdb/common/tdb.c
+++ b/lib/tdb/common/tdb.c
@@ -59,6 +59,11 @@ static void tdb_increment_seqnum(struct tdb_context *tdb)
                return;
        }
 
+       if (tdb->transaction != NULL) {
+               tdb_increment_seqnum_nonblock(tdb);
+               return;
+       }
+
        if (tdb_nest_lock(tdb, TDB_SEQNUM_OFS, F_WRLCK,
                          TDB_LOCK_WAIT|TDB_LOCK_PROBE) != 0) {
                return;