Ming Lei <ming.lei@xxxxxxxxxx> writes: > uring_cmd may never complete, such as ublk, in which uring cmd isn't > completed until one new block request is coming from ublk block device. > > Add cancelable uring_cmd to provide mechanism to driver for cancelling > pending commands in its own way. > > Add API of io_uring_cmd_mark_cancelable() for driver to mark one command as > cancelable, then io_uring will cancel this command in > io_uring_cancel_generic(). ->uring_cmd() callback is reused for canceling > command in driver's way, then driver gets notified with the cancelling > from io_uring. > > Add API of io_uring_cmd_get_task() to help driver cancel handler > deal with the canceling. I think using ->uring_cmd() with IO_URING_F_CANCEL looks much nicer. thanks for that. Reviewed-by: Gabriel Krisman Bertazi <krisman@xxxxxxx> -- Gabriel Krisman Bertazi
