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* [PATCH] blk-mq: kill warning when building block/blk-mq-debugfs-zoned.c
@ 2022-03-01  9:10 Ming Lei
  2022-03-01 13:22 ` Christoph Hellwig
  0 siblings, 1 reply; 2+ messages in thread
From: Ming Lei @ 2022-03-01  9:10 UTC (permalink / raw)
  To: Jens Axboe; +Cc: linux-block, Ming Lei, kernel test robot

Fix the following warning when building block/blk-mq-debugfs-zoned.c:

In file included from block/blk-mq-debugfs-zoned.c:7:
block/blk-mq-debugfs.h:24:14: warning: ‘struct blk_mq_hw_ctx’ declared inside parameter list will not be visible outside of this definition or declaration
   24 |       struct blk_mq_hw_ctx *hctx);
      |              ^~~~~~~~~~~~~

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 block/blk-mq-debugfs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/blk-mq-debugfs.h b/block/blk-mq-debugfs.h
index a68aa6041a10..37fe2716e96e 100644
--- a/block/blk-mq-debugfs.h
+++ b/block/blk-mq-debugfs.h
@@ -5,6 +5,7 @@
 #ifdef CONFIG_BLK_DEBUG_FS
 
 #include <linux/seq_file.h>
+#include <linux/blk-mq.h>
 
 struct blk_mq_debugfs_attr {
 	const char *name;
-- 
2.31.1


^ permalink raw reply related	[flat|nested] 2+ messages in thread

* Re: [PATCH] blk-mq: kill warning when building block/blk-mq-debugfs-zoned.c
  2022-03-01  9:10 [PATCH] blk-mq: kill warning when building block/blk-mq-debugfs-zoned.c Ming Lei
@ 2022-03-01 13:22 ` Christoph Hellwig
  0 siblings, 0 replies; 2+ messages in thread
From: Christoph Hellwig @ 2022-03-01 13:22 UTC (permalink / raw)
  To: Ming Lei; +Cc: Jens Axboe, linux-block, kernel test robot

On Tue, Mar 01, 2022 at 05:10:55PM +0800, Ming Lei wrote:
> Fix the following warning when building block/blk-mq-debugfs-zoned.c:
> 
> In file included from block/blk-mq-debugfs-zoned.c:7:
> block/blk-mq-debugfs.h:24:14: warning: ‘struct blk_mq_hw_ctx’ declared inside parameter list will not be visible outside of this definition or declaration
>    24 |       struct blk_mq_hw_ctx *hctx);
>       |              ^~~~~~~~~~~~~

I think a forard eclaration of struct blk_mq_hw_ctx is all we need here,
no need to pull the full header in.

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2022-03-01  9:10 [PATCH] blk-mq: kill warning when building block/blk-mq-debugfs-zoned.c Ming Lei
2022-03-01 13:22 ` Christoph Hellwig

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