linux-kernel - Re: [PATCH v2 3/3] mm: Add build time sanity chcek for struct page size

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Message-ID: <20180911074733.GX1740@192.168.1.3>
Date:   Tue, 11 Sep 2018 15:47:33 +0800
From:   Baoquan He <bhe@...hat.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, tglx@...utronix.de, mingo@...nel.org,
        hpa@...or.com, thgarnie@...gle.com,
        kirill.shutemov@...ux.intel.com, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] mm: Add build time sanity chcek for struct page
 size

On 09/10/18 at 09:41pm, kbuild test robot wrote:
>    include/linux/build_bug.h:69:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
>      BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
>      ^~~~~~~~~~~~~~~~
> >> mm/page_alloc.c:6852:2: note: in expansion of macro 'BUILD_BUG_ON'
>      BUILD_BUG_ON(sizeof(struct page) < min(SZ_1K, PAGE_SIZE/4));
>      ^~~~~~~~~~~~

Thanks, below code can mute the compiling warning. Will update and
repost.

+       BUILD_BUG_ON(sizeof(struct page) > min((size_t)SZ_1K, PAGE_SIZE));