On Wed, Mar 02, 2022 at 03:19:32PM +0000, David Howells wrote: > Luis Chamberlain <mcgrof@xxxxxxxxxx> wrote: > > > > It'd be nice to be able to set up a 'configuration transaction' and then > > > do a commit to apply it all in one go. > > > > Can't io-uring cmd effort help here? > > I don't know. Wouldn't that want to apply each element as a separate thing? There is nothing to stop us to design an API which starts a transaction / ends. And io-uring cmd supports links so this is all possible in theory, I just don't think anyone has done it before. I mean... io-uring cmd file operation stuff is not even upstream yet... > But you might want to do something more akin to a db transaction, where you > start a transaction, read stuff, consider your changes, propose your changes > and then commit - which would mean io_uring wouldn't help. I think Pavel had some advanced use cases to support that with io-uring cmd work. For instance open a file descriptor and then work on it all in the same chain of commands sent. Luis
