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From:   Salvatore Mesoraca <s.mesoraca16@gmail.com>
Date:   Wed, 14 Mar 2018 13:48:10 +0100
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Subject: Re: [PATCH] net: dsa: drop some VLAs in switch.c
To:     David Laight <David.Laight@aculab.com>
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Kernel Hardening <kernel-hardening@lists.openwall.com>,
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        Kees Cook <keescook@chromium.org>
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2018-03-14 12:24 GMT+01:00 David Laight <David.Laight@aculab.com>:
> Isn't using DECLARE_BITMAP() completely OTT when the maximum size is less
> than the number of bits in a word?

It allocates ceiling(size/8) "unsigned long"s, so yes.