linux-kernel - linux-next: build failure after merge of the vfs tree

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Message-ID: <20151208094216.2325ae04@canb.auug.org.au>
Date:	Tue, 8 Dec 2015 09:42:16 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: linux-next: build failure after merge of the vfs tree

Hi Al,

After merging the vfs tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

In file included from drivers/usb/core/devio.c:37:0:
drivers/usb/core/devio.c: In function 'usbdev_lseek':
include/linux/fs.h:898:36: error: 'PAGE_CACHE_SIZE' undeclared (first use in this function)
 #define MAX_LFS_FILESIZE (((loff_t)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
                                    ^
drivers/usb/core/devio.c:162:48: note: in expansion of macro 'MAX_LFS_FILESIZE'
  return no_seek_end_llseek(file, offset, orig, MAX_LFS_FILESIZE);
                                                ^
include/linux/fs.h:898:36: note: each undeclared identifier is reported only once for each function it appears in
 #define MAX_LFS_FILESIZE (((loff_t)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
                                    ^
drivers/usb/core/devio.c:162:48: note: in expansion of macro 'MAX_LFS_FILESIZE'
  return no_seek_end_llseek(file, offset, orig, MAX_LFS_FILESIZE);
                                                ^
drivers/usb/core/devio.c:163:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Caused by commit

  41fb31e4f962 ("new helper: no_seek_end_llseek()")

PAGE_CACHE_SIZE is defined in linux/pagemap.h which is not included here.
I guess that adding the include to linux/fs.h may have other problems.

I have used the vfs tree from next-20151207 for today.

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
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