On 7/7/21 4:04 PM, Josh Triplett wrote: > On Wed, Jul 07, 2021 at 07:07:52AM -0600, Jens Axboe wrote: >> On 7/7/21 5:39 AM, Pavel Begunkov wrote: >>> Implement an old idea allowing open/accept io_uring requests to register >>> a newly created file as a io_uring's fixed file instead of placing it >>> into a task's file table. The switching is encoded in io_uring's SQEs >>> by setting sqe->buf_index/file_index, so restricted to 2^16-1. Don't >>> think we need more, but may be a good idea to scrap u32 somewhere >>> instead. >>> >>> From the net side only needs a function doing __sys_accept4_file() >>> but not installing fd, see 2/4. >>> >>> Only RFC for now, the new functionality is tested only for open yet. >>> I hope we can remember the author of the idea to add attribution. >> >> Pretty sure the original suggester of this as Josh, CC'ed. > > Thanks for working on this, Pavel! > > Original thread at Totally was thinking it was only a discussion but not an actual patch, and I even did comment on it! Sorry Josh, would have persuaded you to finish it, if I remembered that. > https://lore.kernel.org/io-uring/20200715004209.GA334456@localhost/T/ in > case that helps. > -- Pavel Begunkov
