linux-kernel - Re: [PATCH] io_uring: add missing IORING_MAP_OFF_ZCRX_REGION in io_uring

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Message-ID: <f6694b56-cd1f-45d5-8e5f-b4a98ab2c7af@gmail.com>
Date: Fri, 21 Feb 2025 12:14:16 +0000
From: Pavel Begunkov <asml.silence@...il.com>
To: Bui Quang Minh <minhquangbui99@...il.com>, io-uring@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>, David Wei <dw@...idwei.uk>,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] io_uring: add missing IORING_MAP_OFF_ZCRX_REGION in
 io_uring_mmap

On 2/21/25 08:59, Bui Quang Minh wrote:
> Allow user to mmap the kernel allocated zerocopy-rx refill queue.

Reviewed-by: Pavel Begunkov <asml.silence@...il.com>

> 
> Signed-off-by: Bui Quang Minh <minhquangbui99@...il.com>
> ---
>   io_uring/memmap.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/io_uring/memmap.c b/io_uring/memmap.c
> index 361134544427..76fcc79656b0 100644
> --- a/io_uring/memmap.c
> +++ b/io_uring/memmap.c
> @@ -271,6 +271,8 @@ static struct io_mapped_region *io_mmap_get_region(struct io_ring_ctx *ctx,
>   		return io_pbuf_get_region(ctx, bgid);
>   	case IORING_MAP_OFF_PARAM_REGION:
>   		return &ctx->param_region;
> +	case IORING_MAP_OFF_ZCRX_REGION:
> +		return &ctx->zcrx_region;
>   	}
>   	return NULL;
>   }

-- 
Pavel Begunkov