linux-kernel - [PATCH] NFS: Fix build failure on !CONFIG_NFS_V3 && !CONFIG_NFS

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Date:	Sun, 1 Aug 2010 08:44:15 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Trond Myklebust <Trond.Myklebust@...app.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>
Subject: [PATCH] NFS: Fix build failure on !CONFIG_NFS_V3 && !CONFIG_NFS_V3


* Trond Myklebust <Trond.Myklebust@...app.com> wrote:

> Hi Linus,
> 
> Please pull from the "bugfixes" branch of the repository at
> 
>    git pull git://git.linux-nfs.org/projects/trondmy/nfs-2.6.git bugfixes
> 
> This will update the following files through the appended changesets.
> 
>   Cheers,
>     Trond
> 
> ----
>  fs/nfs/file.c          |   13 +++++++++++--
>  fs/nfs/nfsroot.c       |    2 +-
>  fs/nfs/write.c         |   27 +++++++++++++++++++--------
>  include/linux/nfs_fs.h |    1 +
>  4 files changed, 32 insertions(+), 11 deletions(-)

FYI, these commits introduced a build failure on x86:

  fs/nfs/file.c:508: error: implicit declaration of function ‘nfs_commit_inode’

The nfs_commit_inode() prototype:

 #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
 extern int  nfs_commit_inode(struct inode *, int);
 extern struct nfs_write_data *nfs_commitdata_alloc(void);
 extern void nfs_commit_free(struct nfs_write_data *wdata);
 #endif

is missing if the kernel is configured for legacy NFS:

 CONFIG_NFS_FS=y
 # CONFIG_NFS_V3 is not set
 # CONFIG_NFS_V4 is not set

The fix below solves the build problem here, but I have not tested whether NFS 
still works fine for this config.

Thanks,

	Ingo

Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 include/linux/nfs_fs.h |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index f6e2455..bf145c6 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -492,11 +492,9 @@ extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *);
 extern int nfs_wb_all(struct inode *inode);
 extern int nfs_wb_page(struct inode *inode, struct page* page);
 extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
 extern int  nfs_commit_inode(struct inode *, int);
 extern struct nfs_write_data *nfs_commitdata_alloc(void);
 extern void nfs_commit_free(struct nfs_write_data *wdata);
-#endif
 
 static inline int
 nfs_have_writebacks(struct inode *inode)
--
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