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From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: "Martin K . Petersen" <martin.petersen@oracle.com>,
	"James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
	Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>,
	Hannes Reinecke <hare@suse.de>, Ming Lei <ming.lei@redhat.com>,
	linux-scsi@vger.kernel.org, linux-block@vger.kernel.org
Subject: Re: [PATCH v5 0/8] Rework runtime suspend and SPI domain validation
Date: Wed, 09 Dec 2020 11:44:13 -0500
Message-ID: <yq1y2i7q6ay.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <20201209052951.16136-1-bvanassche@acm.org> (Bart Van Assche's message of "Tue, 8 Dec 2020 21:29:43 -0800")


Bart,

> The SCSI runtime suspend and SPI domain validation mechanisms both use
> scsi_device_quiesce(). scsi_device_quiesce() restricts
> blk_queue_enter() to BLK_MQ_REQ_PREEMPT requests. There is a conflict
> between the requirements of runtime suspend and SCSI domain
> validation: no requests must be sent to runtime suspended devices that
> are in the state RPM_SUSPENDED while BLK_MQ_REQ_PREEMPT requests must
> be processed during SCSI domain validation. This conflict is resolved
> by reworking the SCSI domain validation implementation.

Applied to 5.11/scsi-staging. Thanks for fixing up the -next issue!

-- 
Martin K. Petersen	Oracle Linux Engineering

      parent reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-09  5:29 Bart Van Assche
2020-12-09  5:29 ` [PATCH v5 1/8] block: Fix a race in the runtime power management code Bart Van Assche
2020-12-09  5:29 ` [PATCH v5 2/8] block: Introduce BLK_MQ_REQ_PM Bart Van Assche
2020-12-09  6:06   ` Can Guo
2020-12-09  5:29 ` [PATCH v5 3/8] ide: Do not set the RQF_PREEMPT flag for sense requests Bart Van Assche
2020-12-09  5:29 ` [PATCH v5 4/8] ide: Mark power management requests with RQF_PM instead of RQF_PREEMPT Bart Van Assche
2020-12-09  5:29 ` [PATCH v5 5/8] scsi_transport_spi: Set RQF_PM for domain validation commands Bart Van Assche
2020-12-09  7:34   ` Hannes Reinecke
2020-12-09  5:29 ` [PATCH v5 6/8] scsi: Only process PM requests if rpm_status != RPM_ACTIVE Bart Van Assche
2020-12-09  6:06   ` Can Guo
2020-12-09  5:29 ` [PATCH v5 7/8] block: Remove RQF_PREEMPT and BLK_MQ_REQ_PREEMPT Bart Van Assche
2020-12-09  6:05   ` Can Guo
2020-12-09  5:29 ` [PATCH v5 8/8] block: Do not accept any requests while suspended Bart Van Assche
2020-12-09  6:04   ` Can Guo
2020-12-09  7:36   ` Hannes Reinecke
2020-12-09 16:44 ` Martin K. Petersen [this message]

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