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From:   Matteo Croce <mcroce@redhat.com>
Date:   Thu, 12 Mar 2020 11:12:51 +0100
Message-ID: <CAGnkfhztbmpP0=KT-iNbkUGKerhX04ENFsexA4_2cP_RUs0Png@mail.gmail.com>
Subject: Re: linux-next: build failure after merge of the block tree
To:     Stephen Rothwell <sfr@canb.auug.org.au>
Cc:     Jens Axboe <axboe@kernel.dk>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Coly Li <colyli@suse.de>
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On Thu, Mar 12, 2020 at 3:55 AM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> Hi all,
>
> After merging the block tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
>
> In file included from fs/erofs/xattr.h:10,
>                  from fs/erofs/inode.c:7:
> fs/erofs/inode.c: In function 'erofs_read_inode':
> fs/erofs/internal.h:197:31: error: 'PAGE_SECTORS_SHIFT' undeclared (first use in this function); did you mean 'PA_SECTION_SHIFT'?
>   197 | #define LOG_SECTORS_PER_BLOCK PAGE_SECTORS_SHIFT
>       |                               ^~~~~~~~~~~~~~~~~~
> fs/erofs/inode.c:122:30: note: in expansion of macro 'LOG_SECTORS_PER_BLOCK'
>   122 |   inode->i_blocks = nblks << LOG_SECTORS_PER_BLOCK;
>       |                              ^~~~~~~~~~~~~~~~~~~~~
> fs/erofs/internal.h:197:31: note: each undeclared identifier is reported only once for each function it appears in
>   197 | #define LOG_SECTORS_PER_BLOCK PAGE_SECTORS_SHIFT
>       |                               ^~~~~~~~~~~~~~~~~~
> fs/erofs/inode.c:122:30: note: in expansion of macro 'LOG_SECTORS_PER_BLOCK'
>   122 |   inode->i_blocks = nblks << LOG_SECTORS_PER_BLOCK;
>       |                              ^~~~~~~~~~~~~~~~~~~~~
> In file included from fs/erofs/data.c:7:
> fs/erofs/data.c: In function 'erofs_read_raw_page':
> fs/erofs/internal.h:197:31: error: 'PAGE_SECTORS_SHIFT' undeclared (first use in this function); did you mean 'PA_SECTION_SHIFT'?
>   197 | #define LOG_SECTORS_PER_BLOCK PAGE_SECTORS_SHIFT
>       |                               ^~~~~~~~~~~~~~~~~~
> fs/erofs/data.c:226:4: note: in expansion of macro 'LOG_SECTORS_PER_BLOCK'
>   226 |    LOG_SECTORS_PER_BLOCK;
>       |    ^~~~~~~~~~~~~~~~~~~~~
> fs/erofs/internal.h:197:31: note: each undeclared identifier is reported only once for each function it appears in
>   197 | #define LOG_SECTORS_PER_BLOCK PAGE_SECTORS_SHIFT
>       |                               ^~~~~~~~~~~~~~~~~~
> fs/erofs/data.c:226:4: note: in expansion of macro 'LOG_SECTORS_PER_BLOCK'
>   226 |    LOG_SECTORS_PER_BLOCK;
>       |    ^~~~~~~~~~~~~~~~~~~~~
> fs/erofs/data.c: In function 'erofs_bmap':
> fs/erofs/internal.h:197:31: error: 'PAGE_SECTORS_SHIFT' undeclared (first use in this function); did you mean 'PA_SECTION_SHIFT'?
>   197 | #define LOG_SECTORS_PER_BLOCK PAGE_SECTORS_SHIFT
>       |                               ^~~~~~~~~~~~~~~~~~
> fs/erofs/data.c:351:16: note: in expansion of macro 'LOG_SECTORS_PER_BLOCK'
>   351 |   if (block >> LOG_SECTORS_PER_BLOCK >= blks)
>       |                ^~~~~~~~~~~~~~~~~~~~~
>
> Caused by commit
>
>   61c7d3d5e015 ("block: refactor duplicated macros")
>
> I have used the block tree from next-20200311 for today.
>
> --
> Cheers,
> Stephen Rothwell

Hi,

I was building a kernel without erofs. Just including
include/linux/blkdev.h will fix it, should I amend the
patch or send a fix?

Cheers,


--
Matteo Croce
per aspera ad upstream