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

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Date:	Tue, 22 Apr 2014 11:34:22 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	ebiederm@...ssion.com (Eric W. Biederman)
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Al Viro <viro@...iv.linux.org.uk>,
	David Howells <dhowells@...hat.com>
Subject: Re: linux-next: build failure after merge of the userns tree

Hi Eric,

On Thu, 17 Apr 2014 00:18:44 -0700 ebiederm@...ssion.com (Eric W. Biederman) wrote:
>
> Stephen Rothwell <sfr@...b.auug.org.au> writes:
> 
> > After merging the userns tree, today's linux-next build (powerpc
> > ppc64_defconfig) failed like this:
> >
> > fs/namespace.c: In function 'new_mountpoint':
> > fs/namespace.c:725:9: error: implicit declaration of function 'hash' [-Werror=implicit-function-declaration]
> >   struct list_head *chain = mountpoint_hashtable + hash(NULL, dentry);
> >          ^
> > fs/namespace.c:725:28: warning: initialization from incompatible pointer type [enabled by default]
> >   struct list_head *chain = mountpoint_hashtable + hash(NULL, dentry);
> >                             ^
> > fs/namespace.c:741:2: warning: passing argument 2 of 'hlist_add_head' from incompatible pointer type [enabled by default]
> >   hlist_add_head(&mp->m_hash, chain);
> >   ^
> > In file included from include/linux/signal.h:4:0,
> >                  from include/linux/syscalls.h:72,
> >                  from fs/namespace.c:11:
> > include/linux/list.h:637:20: note: expected 'struct hlist_head *' but argument is of type 'struct list_head *'
> >  static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
> >                     ^
> >
> > So clearly my merge conflict resolution was not sufficient.
> >
> > I will just drop the userns tree for today.  Please give me some help
> > with the resolutions - or fix this stuff up yourselves.
> 
> You had this exact conflict succesfully resolved yesterday.  Sigh.
> 
> Line 725 of fs/namespace.c: Simply need to read.
> 	struct hlist_head *chain = mp_hash(dentry);

Yes, sorry about that - fixed for today (hopefully).
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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