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scsi: target: sbitmap: add seq_file forward declaration 

The target core runs into a warning in the linux/sbitmap.h
file in some configurations:

In file included from include/target/target_core_base.h:7,
                 from drivers/target/target_core_fabric_lib.c:41:
include/linux/sbitmap.h:331:46: error: 'struct seq_file' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
 void sbitmap_show(struct sbitmap *sb, struct seq_file *m);
                                              ^~~~~~~~

In general, headers should not depend on others being included first,
so this fixes it with a forward declaration for that struct name, but
we probably want to merge the patch through the scsi tree to help
bisection.

Fixes: 10e9cbb6b5 ("scsi: target: Convert target drivers to use sbitmap")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Arnd Bergmann 2018-07-06 22:19:07 +02:00 committed by Martin K. Petersen
parent 4ae2ebde31
commit 14b470b568
1 changed files with 2 additions and 0 deletions
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2
include/linux/sbitmap.h
View File

@ -23,6 +23,8 @@
#include <linux/kernel.h>
#include <linux/slab.h>
struct seq_file;
/**
* struct sbitmap_word - Word in a &struct sbitmap.
*/