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    SubjectRe: [RFC 0/4] open/accept directly into io_uring fixed file table
    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
    https://lore.kernel.org/io-uring/20200715004209.GA334456@localhost/T/ in
    case that helps.

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