vfs_default: add sync fallback to pwrite_send/recv
authorRalph Boehme <slow@samba.org>
Tue, 8 Jan 2019 06:38:42 +0000 (07:38 +0100)
committerStefan Metzmacher <metze@samba.org>
Fri, 11 Jan 2019 22:11:18 +0000 (23:11 +0100)
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
source3/modules/vfs_default.c

index 4ca7578..57ce0b4 100644 (file)
@@ -870,8 +870,18 @@ static void vfs_pwrite_done(struct tevent_req *subreq)
        TALLOC_FREE(subreq);
        SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
        talloc_set_destructor(state, NULL);
-       if (tevent_req_error(req, ret)) {
-               return;
+       if (ret != 0) {
+               if (ret != EAGAIN) {
+                       tevent_req_error(req, ret);
+                       return;
+               }
+               /*
+                * If we get EAGAIN from pthreadpool_tevent_job_recv() this
+                * means the lower level pthreadpool failed to create a new
+                * thread. Fallback to sync processing in that case to allow
+                * some progress for the client.
+                */
+               vfs_pwrite_do(state);
        }
 
        tevent_req_done(req);