linux-kernel - Re: [Linux-am33-list] [PATCH] workqueue: Fix alignment calculation in alloc

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Message-ID: <3386.1288042727@redhat.com>
Date:	Mon, 25 Oct 2010 22:38:47 +0100
From:	David Howells <dhowells@...hat.com>
To:	torvalds@...l.org, akpm@...ux-foundation.org
Cc:	dhowells@...hat.com, Tejun Heo <tj@...nel.org>,
	linux-am33-list@...hat.com, linux-kernel@...r.kernel.org,
	Akira Takeuchi <takeuchi.akr@...panasonic.com>,
	Mark Salter <msalter@...hat.com>
Subject: Re: [Linux-am33-list] [PATCH] workqueue: Fix alignment calculation in alloc_cwqs()

David Howells <dhowells@...hat.com> wrote:

> +	const size_t align =
> +		max_t(size_t, 1 << (WORK_STRUCT_FLAG_BITS - BITS_PER_BYTE),
> +		      __alignof__(unsigned long long));

Actually, no, that's not right either.  Need to subtract log2(BITS_PER_BYTE).

David
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