s3:smbd: don't use async dosmode if per-thread cwd is not available

The additional overhead for the async processing should be avoided when
we know the lower level has to fallback to sync processing anyway.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

diff --git a/source3/smbd/smb2_query_directory.c b/source3/smbd/smb2_query_directory.c
index 6020025b28b70a92e99e418c21c61d45fc1512e2..fdb87188f93386018ec2eefe920d220ad596bf3e 100644 (file)
--- a/source3/smbd/smb2_query_directory.c
+++ b/source3/smbd/smb2_query_directory.c
@@ -516,6 +516,9 @@ static struct tevent_req *smbd_smb2_query_directory_send(TALLOC_CTX *mem_ctx,
                size_t max_threads;
 
                max_threads = pthreadpool_tevent_max_threads(conn->sconn->pool);
+               if (max_threads == 0 || !per_thread_cwd_supported()) {
+                       state->async_dosmode = false;
+               }
 
                state->max_async_dosmode_active = lp_smbd_max_async_dosmode(
                                                        SNUM(conn));