linux-kernel - Re: [PATCH v5 3/4] ublk: mark ublk_queue as const for ublk_register_io

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Message-ID: <aAGsodNqMvuq5eIs@fedora>
Date: Fri, 18 Apr 2025 09:36:33 +0800
From: Ming Lei <ming.lei@...hat.com>
To: Uday Shankar <ushankar@...estorage.com>
Cc: Jens Axboe <axboe@...nel.dk>,
	Caleb Sander Mateos <csander@...estorage.com>,
	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 3/4] ublk: mark ublk_queue as const for
 ublk_register_io_buf

On Wed, Apr 16, 2025 at 01:46:07PM -0600, Uday Shankar wrote:
> We now allow multiple tasks to operate on I/Os belonging to the same
> queue concurrently. This means that any writes to ublk_queue in the I/O
> path are potential sources of data races. Try to prevent these by
> marking ublk_queue pointers as const in ublk_register_io_buf.
> 
> Suggested-by: Ming Lei <ming.lei@...hat.com>
> Signed-off-by: Uday Shankar <ushankar@...estorage.com>
> Reviewed-by: Caleb Sander Mateos <csander@...estorage.com>

Reviewed-by: Ming Lei <ming.lei@...hat.com>


Thanks,
Ming