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Date: Fri, 19 Jul 2019 10:05:57 +1000
From: Stephen Rothwell <sfr@canb.auug.org.au>
Subject: Re: linux-next: Tree for Jul 18 (header build error)
Message-ID: <20190719100557.3ead3285@canb.auug.org.au>
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To: Randy Dunlap <rdunlap@infradead.org>
Cc: Linux Next Mailing List <linux-next@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Masahiro Yamada <yamada.masahiro@socionext.com>, linux-kbuild <linux-kbuild@vger.kernel.org>, "Darrick J. Wong" <darrick.wong@oracle.com>

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Hi all,

On Thu, 18 Jul 2019 10:00:22 -0700 Randy Dunlap <rdunlap@infradead.org> wro=
te:
>
> on x86_64, when CONFIG_BLOCK is not set:
>=20
>   CC      include/linux/iomap.h.s
> In file included from <command-line>:0:0:
> ./../include/linux/iomap.h: In function =E2=80=98iomap_sector=E2=80=99:
> ./../include/linux/iomap.h:76:48: error: =E2=80=98SECTOR_SHIFT=E2=80=99 u=
ndeclared (first use in this function); did you mean =E2=80=98SECTIONS_SHIF=
T=E2=80=99?
>   return (iomap->addr + pos - iomap->offset) >> SECTOR_SHIFT;
>                                                 ^~~~~~~~~~~~

include/linux/iomap.h should only be used when CONFIG_BLOCK is set (if
you follow the Kconfig trail).  So maybe this header should only be
compile tested if CONFIG_BLOCK is set.

--=20
Cheers,
Stephen Rothwell

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