On 8/14/19 3:35 AM, Jackie Liu wrote: > This patch may fix two issues: > > First, when IOSQE_IO_DARIN set, the next IOs need to be inserted into defer > list to delay execution, but link io will be actively scheduled to run by > calling io_queue_sqe. > > Second, when multiple LINK_IOs are inserted together with defer_list, the > LINK_IO is no longer keep order. > > |-------------| > | LINK_IO | ----> insert to defer_list ----------- > |-------------| | > | LINK_IO | ----> insert to defer_list ----------| > |-------------| | > | LINK_IO | ----> insert to defer_list ----------| > |-------------| | > | NORMAL_IO | ----> insert to defer_list ----------| > |-------------| | > | > queue_work at same time <-----| Looks good, applied. -- Jens Axboe
