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

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Date:   Tue, 10 Jul 2018 08:09:57 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        James Bottomley <James.Bottomley@...senPartnership.com>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Matthew Wilcox <willy@...radead.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>,
        Omar Sandoval <osandov@...com>
Subject: Re: linux-next: build warning after merge of the scsi tree

On 7/10/18 1:31 AM, Stephen Rothwell wrote:
> Hi all,
> 
> On Wed, 20 Jun 2018 13:29:10 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>>
>> After merging the scsi tree, today's linux-next build (powerpc
>> allyesconfig) produced this warning:
>>
>> In file included from include/target/target_core_base.h:7:0,
>>                  from drivers/target/target_core_tmr.c:31:
>> include/linux/sbitmap.h:331:46: warning: 'struct seq_file' declared inside parameter list will not be visible outside of this definition or declaration
>>  void sbitmap_show(struct sbitmap *sb, struct seq_file *m);
>>                                               ^~~~~~~~
>> include/linux/sbitmap.h:342:53: warning: 'struct seq_file' declared inside parameter list will not be visible outside of this definition or declaration
>>  void sbitmap_bitmap_show(struct sbitmap *sb, struct seq_file *m);
>>                                                      ^~~~~~~~
>> include/linux/sbitmap.h:530:59: warning: 'struct seq_file' declared inside parameter list will not be visible outside of this definition or declaration
>>  void sbitmap_queue_show(struct sbitmap_queue *sbq, struct seq_file *m);
>>                                                            ^~~~~~~~
>> In file included from include/target/target_core_base.h:7:0,
>>                  from drivers/target/target_core_ua.c:30:
>> include/linux/sbitmap.h:331:46: warning: 'struct seq_file' declared inside parameter list will not be visible outside of this definition or declaration
>>  void sbitmap_show(struct sbitmap *sb, struct seq_file *m);
>>                                               ^~~~~~~~
>> include/linux/sbitmap.h:342:53: warning: 'struct seq_file' declared inside parameter list will not be visible outside of this definition or declaration
>>  void sbitmap_bitmap_show(struct sbitmap *sb, struct seq_file *m);
>>                                                      ^~~~~~~~
>> include/linux/sbitmap.h:530:59: warning: 'struct seq_file' declared inside parameter list will not be visible outside of this definition or declaration
>>  void sbitmap_queue_show(struct sbitmap_queue *sbq, struct seq_file *m);
>>                                                            ^~~~~~~~
>>
>> Introduced by commit
>>
>>   24af1ccfe12a ("sbitmap: add helpers for dumping to a seq_file")
>>
>> in v4.11.rc1, but exposed by commit
>>
>>   eca7ee1f33e8 ("scsi: target: Convert target drivers to use sbitmap")
> 
> I am still seeing these warnings ...

Martin queued up the forward declaration patch for this one, not sure
why it isn't showing up in the scsi tree yet.

-- 
Jens Axboe