From: Matthew Wilcox <willy@infradead.org>
To: Liam Howlett <liam.howlett@oracle.com>
Cc: "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/4] radix tree test suite: Add __must_be_array() support
Date: Wed, 12 May 2021 22:46:31 +0100 [thread overview]
Message-ID: <YJxMt92cy/9zM7li@casper.infradead.org> (raw)
In-Reply-To: <20210512184850.3526677-2-Liam.Howlett@Oracle.com>
On Wed, May 12, 2021 at 06:48:52PM +0000, Liam Howlett wrote:
> Copy __must_be_array() define from include/linux/compiler.h for use in
> the radix tree test suite userspace compiles.
We needed this earlier, but see commit
7487de534dcbe143e6f41da751dd3ffcf93b00ee
I bet if you revert this commit, it'll still build fine.
Also, I bet patch 1/4 is the same -- I see a definition of
fallthrough in tools/include/linux/compiler-gcc.h
> Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
> ---
> tools/testing/radix-tree/linux/kernel.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/tools/testing/radix-tree/linux/kernel.h b/tools/testing/radix-tree/linux/kernel.h
> index c400a27e544a..2c3771fff2c0 100644
> --- a/tools/testing/radix-tree/linux/kernel.h
> +++ b/tools/testing/radix-tree/linux/kernel.h
> @@ -30,4 +30,6 @@
> # define fallthrough do {} while (0) /* fallthrough */
> #endif /* __has_attribute */
>
> +#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
> +
> #endif /* _KERNEL_H */
> --
> 2.30.2
next prev parent reply other threads:[~2021-05-12 22:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 18:48 [PATCH 1/4] radix tree test suite: Add support for fallthrough attribute Liam Howlett
2021-05-12 18:48 ` [PATCH 2/4] radix tree test suite: Add __must_be_array() support Liam Howlett
2021-05-12 21:46 ` Matthew Wilcox [this message]
2021-05-12 22:13 ` Liam Howlett
2021-05-12 18:48 ` [PATCH 3/4] radix tree test suite: Add kmem_cache enhancements and pr_err Liam Howlett
2021-05-12 18:48 ` [PATCH 4/4] radix tree test suite: Add support for slab bulk APIs Liam Howlett
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