tdb: Purge dead records whenever we block the freelist

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

diff --git a/lib/tdb/common/freelist.c b/lib/tdb/common/freelist.c
index 5afd89bc55486ea6c5205a4928a6911150fd7f52..5221bf3679e6acf5fb02b25eabbeb9d79bd80529 100644 (file)
--- a/lib/tdb/common/freelist.c
+++ b/lib/tdb/common/freelist.c
@@ -619,6 +619,12 @@ blocking_freelist_allocate:
        if (tdb_lock(tdb, -1, F_WRLCK) == -1) {
                return 0;
        }
+       /*
+        * Dead records can happen even if max_dead_records==0, they
+        * are older than the max_dead_records concept: They happen if
+        * tdb_delete happens concurrently with a traverse.
+        */
+       tdb_purge_dead(tdb, hash);
        ret = tdb_allocate_from_freelist(tdb, length, rec);
        tdb_unlock(tdb, -1, F_WRLCK);
        return ret;