Re: [RFC -next 00/10] Add ZC notifications to splice and sendfile

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Mar 19, 2025 at 08:32:19AM -0700, Joe Damato wrote:
> See the docs on MSG_ZEROCOPY [1], but in short when a user app calls
> sendmsg and passes MSG_ZEROCOPY a completion notification is added
> to the error queue. The user app can poll for these to find out when
> the TX has completed and the buffer it passed to the kernel can be
> overwritten.

Yikes.  That's not just an ugly interface, but something entirely
specific to sockets and incompatible with all other asynchronous I/O
interfaces.

> > and why aren't you simply plugging this into io_uring and generate
> > a CQE so that it works like all other asynchronous operations?
> 
> I linked to the iouring work that Pavel did in the cover letter.
> Please take a look.

Please write down what matters in the cover letter, including all the
important tradeoffs.




[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux