Hello, Alexander has reported [1] that when he tries to online-resize a small filesystem JBD2 eventually BUGs in transaction commit code. This is caused by online resize code starting a transaction of size close to maximum allowed transaction size for the journal. When descriptor blocks are added to the transaction it actually exceeds maximum transaction size and that confuses start_this_handle() which enters infinite transaction commit loop (see patch 3 for details). This patch series fixes the confusion in start_this_handle(). There's still open question how to make online resizing with tiny journal work. Honza [1] https://lore.kernel.org/all/CA+hUFcuGs04JHZ_WzA1zGN57+ehL2qmHOt5a7RMpo+rv6Vyxtw@xxxxxxxxxxxxxx
