On 3/30/23 13:36, Ming Lei wrote: [...] > V6: > - re-design fused command, and make it more generic, moving sharing buffer > as one plugin of fused command, so in future we can implement more plugins > - document potential other use cases of fused command > - drop support for builtin secondary sqe in SQE128, so all secondary > requests has standalone SQE > - make fused command as one feature > - cleanup & improve naming Hi Ming, et al., I started to wonder if fused SQE could be extended to combine multiple syscalls, for example open/read/close. Which would be another solution for the readfile syscall Miklos had proposed some time ago. https://lore.kernel.org/lkml/CAJfpegusi8BjWFzEi05926d4RsEQvPnRW-w7My=ibBHQ8NgCuw@xxxxxxxxxxxxxx/ If fused SQEs could be extended, I think it would be quite helpful for many other patterns. Another similar examples would open/write/close, but ideal would be also to allow to have it more complex like "open/write/sync_file_range/close" - open/write/close might be the fastest and could possibly return before sync_file_range. Use case for the latter would be a file server that wants to give notifications to client when pages have been written out. Thanks, Bernd
