41 pub type UserData = u64;  typedef
203         user_data: UserData,  in add_rw_op()  argument
438         user_data: UserData,  in add_write()  argument
464         user_data: UserData,  in add_read()  argument
484         user_data: UserData,  in add_writev_iter()  argument
518         user_data: UserData,  in add_writev()  argument
543         user_data: UserData,  in add_readv_iter()  argument
577         user_data: UserData,  in add_readv()  argument
596     pub fn add_nop(&self, user_data: UserData) -> Result<()> {  in add_nop()
614     pub fn add_fsync(&self, fd: RawFd, user_data: UserData) -> Result<()> {  in add_fsync()
637         user_data: UserData,  in add_fallocate()  argument
662     pub fn add_poll_fd(&self, fd: RawFd, events: EventType, user_data: UserData) -> Result<()> {  in add_poll_fd()
679     pub fn remove_poll_fd(&self, fd: RawFd, events: EventType, user_data: UserData) -> Result<()> {  in remove_poll_fd()
702     pub fn async_cancel(&self, addr: UserData, user_data: UserData) -> Result<()> {  in async_cancel()  argument
791     pub fn wait(&self) -> Result<impl Iterator<Item = (UserData, std::io::Result<u32>)> + '_> {  in wait()
887     pending_op_addrs: BTreeMap<UserData, Pin<Box<[IoBufMut<'static>]>>>,
916     fn add_op_data(&self, user_data: UserData, addrs: Pin<Box<[IoBufMut<'static>]>>) {  in add_op_data()  argument
945     fn pop_front(&self) -> Option<(UserData, std::io::Result<u32>)> {  in pop_front()  argument
983     type Item = (UserData, std::io::Result<u32>);