Re: [PATCH v9 04/10] block: Make q_usage_counter also track legacy requests

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On 10/17/2017 01:28 AM, Bart Van Assche wrote:
> From: Ming Lei <ming.lei@xxxxxxxxxx>
> 
> This patch makes it possible to pause request allocation for
> the legacy block layer by calling blk_mq_freeze_queue() and
> blk_mq_unfreeze_queue().
> 
> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
> [ bvanassche: Combined two patches into one, edited a comment and made sure
>   REQ_NOWAIT is handled properly in blk_old_get_request() ]
> Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxx>
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
> Tested-by: Martin Steigerwald <martin@xxxxxxxxxxxx>
> Cc: Ming Lei <ming.lei@xxxxxxxxxx>
> Cc: Hannes Reinecke <hare@xxxxxxxx>
> ---
>  block/blk-core.c | 12 ++++++++++++
>  block/blk-mq.c   | 10 ++--------
>  2 files changed, 14 insertions(+), 8 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@xxxxxxx			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
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