Re: [PATCH] io_uring/kbuf: cap buffer selection length at MAX_RW_COUNT

Nitesh Shetty <[email protected]> Mon, 27 Jul 2026 19:34:43 +0530
Newsgroups org.kernel.vger.io-uring
Message-ID <[email protected]>
On 26/07/26 04:28PM, Jens Axboe wrote:
>io_ring_buffers_peek() builds an iovec array from provided buffers, and
>that in turn can be handed off to a lower level provider. Be prudent and
>cap the total size to MAX_RW_COUNT, which is the Linux default for how
>much IO do to in a single call.
>
>No bugs here, but it's a good preventative measure to avoid truncation
>issues.
>
>Signed-off-by: Jens Axboe <[email protected]>
>
Reviewed-by: Nitesh Shetty <[email protected]>