linux-kernel - Re: next-20080808 fs/nfsctl.c build error

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Date:	Sat, 9 Aug 2008 08:31:06 +1000 (EST)
From:	James Morris <jmorris@...ei.org>
To:	Eduardo Habkost <ehabkost@...hat.com>
cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	David Howells <dhowells@...hat.com>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: next-20080808 fs/nfsctl.c build error

On Fri, 8 Aug 2008, Eduardo Habkost wrote:

> 
> I got the following build error on next-20080808:
> 
> fs/nfsctl.c: In function ?do_open?:
> fs/nfsctl.c:45: error: implicit declaration of function ?current_cred?
> fs/nfsctl.c:45: warning: passing argument 4 of ?dentry_open? makes pointer from integer without a cast
> make[1]: *** [fs/nfsctl.o] Error 1
> make: *** [fs/nfsctl.o] Error 2

Something I noticed in the configs posted with build breakages is 
CONFIG_SMP=n, although I'm not sure how/if that's related.

In any case, it seems that linux/cred.h should include linux/sched.h to 
provide a full definition of 'struct task_struct', so that 'current' can 
be dereferenced (e.g. in current_cred()).

Does this patch work for you and look correct ?

---- 

diff --git a/fs/nfsctl.c b/fs/nfsctl.c
index cc4ef26..f6967b6 100644
--- a/fs/nfsctl.c
+++ b/fs/nfsctl.c
@@ -14,6 +14,7 @@
 #include <linux/namei.h>
 #include <linux/mount.h>
 #include <linux/syscalls.h>
+#include <linux/cred.h>
 #include <asm/uaccess.h>
 
 /*
diff --git a/include/linux/cred.h b/include/linux/cred.h
index b156ed4..431f1ab 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -14,9 +14,9 @@
 
 #include <linux/capability.h>
 #include <linux/key.h>
+#include <linux/sched.h>
 #include <asm/atomic.h>
 
-struct user_struct;
 struct cred;
 struct inode;
 

---

Signed-off-by: James Morris <jmorris@...ei.org>



-- 
James Morris
<jmorris@...ei.org>
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