[PATCH V3 4/4] nvme: use blk_mq_[un]quiesce_tagset

[Hannes Reinecke]

On 9/8/20 10:15 AM, Ming Lei wrote:
> From: Sagi Grimberg <sagi at grimberg.me>
> 
> All controller namespaces share the same tagset, so we
> can use this interface which does the optimal operation
> for parallel quiesce based on the tagset type (e.g.
> blocking tagsets and non-blocking tagsets).
> 
> Cc: Sagi Grimberg <sagi at grimberg.me>
> Cc: Bart Van Assche <bvanassche at acm.org>
> Cc: Johannes Thumshirn <Johannes.Thumshirn at wdc.com>
> Cc: Chao Leng <lengchao at huawei.com>
> 
> Add code to unquiesce ctrl->connect_q in nvme_stop_queues(), meantime
> avoid to call blk_mq_quiesce_tagset()/blk_mq_unquiesce_tagset() if
> this tagset isn't initialized.
> Signed-off-by: Ming Lei <ming.lei at redhat.com>
> Signed-off-by: Sagi Grimberg <sagi at grimberg.me>
> ---
>  drivers/nvme/host/core.c | 19 +++++++++----------
>  1 file changed, 9 insertions(+), 10 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare at suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		           Kernel Storage Architect
hare at suse.de			                  +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer