From: Gabriel Krisman Bertazi <krisman@suse.de>
To: Jens Axboe <axboe@kernel.dk>, io-uring <io-uring@vger.kernel.org>
Cc: Sung Keum <kambodi127@gmail.com>
Subject: Re: [PATCH] io_uring/kbuf: cap buffer selection length at MAX_RW_COUNT
Date: Sun, 26 Jul 2026 20:12:07 -0400 [thread overview]
Message-ID: <87v7a1cmug.fsf@mailhost.krisman.be> (raw)
In-Reply-To: <aa826e79-ddc5-4a82-9863-a5edfdce709f@kernel.dk>
Jens Axboe <axboe@kernel.dk> writes:
> 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 <axboe@kernel.dk>
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
prev parent reply other threads:[~2026-07-27 0:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-26 22:28 [PATCH] io_uring/kbuf: cap buffer selection length at MAX_RW_COUNT Jens Axboe
2026-07-27 0:12 ` Gabriel Krisman Bertazi [this message]
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