From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: Re: [PATCH 05/12] blk-mq: Introduce blk_mq_quiesce_queue() Date: Thu, 27 Oct 2016 08:56:50 -0700 Message-ID: <5227b122-8c10-5f63-4448-499fc645cfbd@sandisk.com> References: <5143c240-39af-9fe2-d3e6-ed69f9c20531@sandisk.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Hannes Reinecke , Jens Axboe Cc: Christoph Hellwig , James Bottomley , "Martin K. Petersen" , Mike Snitzer , Doug Ledford , Keith Busch , Ming Lei , Laurence Oberman , "linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" List-Id: linux-rdma@vger.kernel.org On 10/26/2016 10:52 PM, Hannes Reinecke wrote: > Hmm. Can't say I like having to have two RCU structure for the same > purpose, but I guess that can't be helped. Hello Hannes, There are two RCU structures because of BLK_MQ_F_BLOCKING. Today only the nbd driver sets that flag. If the nbd driver would be modified such that it doesn't set that flag then the BLK_MQ_F_BLOCKING flag and also queue_rq_srcu could be eliminated from the blk-mq core. Bart. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html