[PATCH v2 4/7] blk-mq: Introduce blk_quiesce_queue() and blk_resume_queue()

[Hannes Reinecke]

On 09/29/2016 01:59 AM, Bart Van Assche wrote:
> blk_quiesce_queue() prevents that new queue_rq() invocations
> occur and waits until ongoing invocations have finished. This
> function does *not* wait until all outstanding requests have
> finished (this means invocation of request.end_io()).
> blk_resume_queue() resumes normal I/O processing.
> 
> Signed-off-by: Bart Van Assche <bart.vanassche at sandisk.com>
> Cc: Hannes Reinecke <hare at suse.com>
> Cc: Johannes Thumshirn <jthumshirn at suse.de>
> ---
>  block/blk-mq.c         | 137 ++++++++++++++++++++++++++++++++++++++++++++-----
>  include/linux/blk-mq.h |   2 +
>  include/linux/blkdev.h |   5 ++
>  3 files changed, 131 insertions(+), 13 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare at suse.com>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare at suse.de			      +49 911 74053 688
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