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bh=3WycB7deeH4N77XCxYSpDoyHgigBfOsfA/l1DUt3Iq4=; b=CbnDJQkP/pRhO94W3xehr4PIUumrBKh2h6k85o7yyZ5qis1q4WPoliddjQPJG5g8/N23Zr y6MSYqVeDkn8CB8FAlMKJUTzjaXBWYqhYsqodZDZ1bn7pZ5bzvfUbjsfUt4Iy6HUXcbG8/ CJx34EEd8ZpGhFg4wUmRhysaNTIK/4k+jzbmC99MPG7tdPZVWnoi0rIQph+XDhfkNODwLb rGuuHIQsV9/BiPLQbmjrHgecHwKXe05bD/Qfxg6qGVZk4g5x/6aiaisSfJim1PwIT8zXF8 MzS9KyZPGMfHmVODWj+WSagf4wuzhAXh2kZy8SZFMO/FcsPIdhDRRJWQBfvRjg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1690823957; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=3WycB7deeH4N77XCxYSpDoyHgigBfOsfA/l1DUt3Iq4=; b=9I5o68k9/KxZ19MCx1ZzRCsGVutxiHRYG6O9NIimZJuwyP42OYwcF9OKIaljbBRwdxSFgy /pBIstsXYJxooQAw== To: Peter Zijlstra , axboe@kernel.dk Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, mingo@redhat.com, dvhart@infradead.org, dave@stgolabs.net, andrealmeid@igalia.com, Andrew Morton , urezki@gmail.com, hch@infradead.org, lstoakes@gmail.com, Arnd Bergmann , linux-api@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, malteskarupke@web.de Subject: Re: [PATCH v1 09/14] futex: Add sys_futex_requeue() In-Reply-To: <20230721105744.298661259@infradead.org> References: <20230721102237.268073801@infradead.org> <20230721105744.298661259@infradead.org> Date: Mon, 31 Jul 2023 19:19:17 +0200 Message-ID: <87sf94m222.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Queue-Id: 61AD54001D X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: qpf83bu7mxm4yenge3a8dk8xep4gbpim X-HE-Tag: 1690823959-36025 X-HE-Meta: U2FsdGVkX1/qALb8pEyR4qW7UKNCWBAlr920gElmmtRovvppjf3fF2bha9MuwZduI1fHU9Ey8v7n0VQVh15fh8PZXd+iX0pXZpIGODwjOwVtkG9rLbcYa1VEErsCLVuFRSk3USLAn5Q929s3hOlOgydJi6O8KImhBcq5iFTDlFs0Is/+Q8qGSx5m30n6eO3lswsFK1mSkWr1iMQ/R++FlrJgZzZVr16IExTHMDTPQRUtxaD7fM3P9AcH44q+/F0ViEoUhAezxvbdX2UzTW/XDwFVjocfXhlw1L07EE8djDXfEPvT5u6dZlpp2ezaI3UhCoeX6Y/igs5vrPd7roSsBVL7uUddkjDcUteTMmu7SlnkDYn0jiDdr8aCpomSJV1vCTwEuK8xQ84t5Wfoj+UlvE5q6RJyU6bSZqShWUQwqhqkyC3RCHP5HmuM0HK5WMhqoysXSeZ8QRYK2ai3ihwKMAbrsohSsK23NEQNw60tvh6oG4kofShSMxcsTD+QRLt6/vmW0OZEbiNdCRRHTvnAux0XqcaShxsriYsj2FtNaY0Qa4euE7uDP4ZQzlC4gDpDjoagp4pDr0pVNp7XBwD6aw2DHNino5QKpLCtxxWno9xiiSoZ8F8ZqyFvd5kQvTIn2ceEHYWdLUO0VbbKRtt6f+A1pjaCQyP4xzDPKkgtkM7+bcLpCQEcdxeIpf99Cp2/+9Eu7NZGquBuVVqN4L0gbgpTcg1Pr3i+vF0nPQS5puK8azLRef/z2qnnx/FH9jihL0jAnitNFCvF4tuLKFn+z8nhg7LJ0AsrhyJjPh5et565ljeY82Q7NnKcNs3wUA2N4BErolZYTzL4eTWXqKhxrUandl2kJ2iT1nYozBzgBi5jJuNXyD21XzhopDvrDBO7rwLpCL6F8n3ffhs4YPINIbHIWyoAKO08Qtuczlybbpl3YhbTgOZvhZHLZXHVcbYYQ/mrSu6CPoW4SSg1YlO EHuasL3D ogp5a7oc8+9xkjuLzlVkI5S56wULdILZM+hMnlmHjBF1hdoAE7CkeEt16nNvQbbubiqfyETvpYF7QIwTSRB+3uuQf40mTQbL5sJBY X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Jul 21 2023 at 12:22, Peter Zijlstra wrote: > +/* > + * sys_futex_requeue - Requeue a waiter from one futex to another > + * @waiters: array describing the source and destination futex > + * @flags: unused > + * @nr_wake: number of futexes to wake > + * @nr_requeue: number of futexes to requeue > + * > + * Identical to the traditional FUTEX_CMP_REQUEUE op, except it is part of the > + * futex2 family of calls. > + */ > + > +SYSCALL_DEFINE4(futex_requeue, > + struct futex_waitv __user *, waiters, > + unsigned int, flags, > + int, nr_wake, > + int, nr_requeue) > +{ > + struct futex_vector futexes[2]; > + u32 cmpval; So this is explictely u32. I'm completely confused vs. the 64 bit futex size variant enablement earlier in the series by now.