Re: linux-next: build warning after merge of the staging tree

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Hi Greg,

On Mon, Aug 26, 2019 at 08:30:24AM +0200, Greg KH wrote:
> On Mon, Aug 26, 2019 at 04:24:32PM +1000, Stephen Rothwell wrote:
> > Hi all,
> > 
> > After merging the staging tree, today's linux-next build (x86_64
> > allmodconfig) produced this warning:
> > 
> > In file included from include/trace/events/erofs.h:8,
> >                  from <command-line>:
> > include/trace/events/erofs.h:28:37: warning: 'struct dentry' declared inside parameter list will not be visible outside of this definition or declaration
> >   TP_PROTO(struct inode *dir, struct dentry *dentry, unsigned int flags),
> >                                      ^~~~~~
> > include/linux/tracepoint.h:233:34: note: in definition of macro '__DECLARE_TRACE'
> >   static inline void trace_##name(proto)    \
> >                                   ^~~~~
> > include/linux/tracepoint.h:396:24: note: in expansion of macro 'PARAMS'
> >   __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args),  \
> >                         ^~~~~~
> > include/linux/tracepoint.h:532:2: note: in expansion of macro 'DECLARE_TRACE'
> >   DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
> >   ^~~~~~~~~~~~~
> > include/linux/tracepoint.h:532:22: note: in expansion of macro 'PARAMS'
> >   DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
> >                       ^~~~~~
> > include/trace/events/erofs.h:26:1: note: in expansion of macro 'TRACE_EVENT'
> >  TRACE_EVENT(erofs_lookup,
> >  ^~~~~~~~~~~
> > include/trace/events/erofs.h:28:2: note: in expansion of macro 'TP_PROTO'
> >   TP_PROTO(struct inode *dir, struct dentry *dentry, unsigned int flags),
> >   ^~~~~~~~
> > 
> > and moany more like this ...
> > 
> > Introduced by commit
> > 
> >   47e4937a4a7c ("erofs: move erofs out of staging")
> > 
> > (or, at least, exposed by it).  It needs, at least, a "struct dentry;"
> > added to the file.
> 
> Odd, why has this never been seen before when the same files were in
> drivers/staging/ and why 0-day isn't reporting this?

I Think it is weird since it is never failed in staging and kbuild-all 0-day ci
(my tree and you tree)....

> 
> Gao, can you send me a patch for this?

Got it, I will look into that...

Thanks,
Gao Xiang

> 
> thanks,
> 
> greg k-h



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