On 2/26/25 18:20, Keith Busch wrote:
From: Keith Busch <kbusch@xxxxxxxxxx>
Provide an interface for the kernel to leverage the existing
pre-registered buffers that io_uring provides. User space can reference
these later to achieve zero-copy IO.
User space must register an empty fixed buffer table with io_uring in
order for the kernel to make use of it.
Can you also fail rw.c:loop_rw_iter()? Something like:
loop_rw_iter() {
if ((req->flags & REQ_F_BUF_NODE) &&
req->buf_node->buf->release)
return -EFAULT;
}
--
Pavel Begunkov
