Vectored IO with fixed buffer

[SidongYang]

There is no operation that vectored io with fixed buffer. It seems that fixed buffer is useful for reducing latency for minimize user space memory pinning cost. And It would be good to use it with vectored io like IORING_OP_{READV,WRITEV}_FIXED. Is there some reason that isn't supported for now?

[isilence]

https://lore.kernel.org/io-uring/[email protected]/

I need to pick the patches up.

[SidongYang]

Thanks! It seems that the patch is for send, I would be appreciate that readv/writev support fixed buffer.

[isilence]

The important part is infrastructure, using it after for an opcode is not hard.