linux-kernel - Re: [PATCH 06/10] io_uring: add support for futex wake and wait

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Message-ID: <20230721113718.GA3638458@hirez.programming.kicks-ass.net>
Date:   Fri, 21 Jul 2023 13:37:18 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     io-uring@...r.kernel.org, linux-kernel@...r.kernel.org,
        andres@...razel.de
Subject: Re: [PATCH 06/10] io_uring: add support for futex wake and wait

On Fri, Jul 21, 2023 at 01:30:31PM +0200, Peter Zijlstra wrote:

Sorry, I was too quick..

	iof->uaddr = sqe->addr;
	iof->val   = sqe->futex_val;
	iof->mask  = sqe->futex_mask;
	flags      = sqe->futex_flags;

	if (flags & ~FUTEX2_MASK)
		return -EINVAL;

	iof->flags = futex2_to_flags(flags);
	if (!futex_flags_valid(iof->flags))
		return -EINVAL;

	if (!futex_validate_input(iof->flags, iof->val) ||
	    !futex_validate_input(iof->flags, iof->mask))
		return -EINVAL