Re: linux-next: build failure after merge of the scsi-mkp tree

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Hi all,

On Tue, 8 Dec 2020 20:28:53 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Hi all,
> 
> After merging the scsi-mkp tree, today's linux-next build (sparc64
> defconfig) failed like this:
> 
> drivers/mtd/nand/raw/intel-nand-controller.c:17:10: fatal error: linux/mtd/nand_ecc.h: No such file or directory
>    17 | #include <linux/mtd/nand_ecc.h>
>       |          ^~~~~~~~~~~~~~~~~~~~~~

Clearly, it did not fail like that :-)

block/blk-core.c: In function 'blk_queue_enter':
block/blk-core.c:443:18: error: 'struct request_queue' has no member named 'rpm_status'; did you mean 'stats'?
    if ((pm && q->rpm_status != RPM_SUSPENDED) ||
                  ^~~~~~~~~~
                  stats

> Caused by commit
> 
>   81a395cdc176 ("scsi: block: Do not accept any requests while suspended")
> 
> # CONFIG_PM is not set
> 
> I have applied the following patch:
> 
> From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Date: Tue, 8 Dec 2020 20:12:33 +1100
> Subject: [PATCH] scsi: block: fix for "scsi: block: Do not accept any requests while suspended"
> 
> Fixes: 81a395cdc176 ("scsi: block: Do not accept any requests while suspended")
> Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> ---
>  block/blk-core.c | 18 ++++++++++++++----
>  1 file changed, 14 insertions(+), 4 deletions(-)
> 
> diff --git a/block/blk-core.c b/block/blk-core.c
> index a71a5c9429d6..9c9aec1382be 100644
> --- a/block/blk-core.c
> +++ b/block/blk-core.c
> @@ -421,6 +421,18 @@ void blk_cleanup_queue(struct request_queue *q)
>  }
>  EXPORT_SYMBOL(blk_cleanup_queue);
>  
> +#ifdef CONFIG_PM
> +static bool rq_suspended(struct request_queue *q)
> +{
> +	return q->rpm_status == RPM_SUSPENDED;
> +}
> +#else
> +static bool rq_suspended(struct request_queue *q)
> +{
> +	return false;
> +}
> +#endif
> +
>  /**
>   * blk_queue_enter() - try to increase q->q_usage_counter
>   * @q: request queue pointer
> @@ -440,12 +452,10 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags)
>  			 * responsible for ensuring that that counter is
>  			 * globally visible before the queue is unfrozen.
>  			 */
> -			if ((pm && q->rpm_status != RPM_SUSPENDED) ||
> -			    !blk_queue_pm_only(q)) {
> +			if ((pm && !rq_suspended(q)) || !blk_queue_pm_only(q))
>  				success = true;
> -			} else {
> +			else
>  				percpu_ref_put(&q->q_usage_counter);
> -			}
>  		}
>  		rcu_read_unlock();
>  
> -- 
> 2.29.2

-- 
Cheers,
Stephen Rothwell

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