[RFC PATCH 5/6] io_uring: add support for uring_cmd with fixed-buffer

[Kanchan Joshi]

On Tue, Sep 7, 2021 at 1:19 PM Christoph Hellwig <hch at lst.de> wrote:
>
> On Thu, Aug 05, 2021 at 06:25:38PM +0530, Kanchan Joshi wrote:
> > From: Anuj Gupta <anuj20.g at samsung.com>
> >
> > Add IORING_OP_URING_CMD_FIXED opcode that enables performing the
> > operation with previously registered buffers.
>
> We should also pass this information on into ->uring_cmd instead of
> needing two ioctl_cmd opcodes.

Indeed. We now (in internal version) switch between fixed/regular
ioctl by looking at io-uring opcode which will be different anyway.

-- 
Kanchan