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From: Christoph Hellwig <hch@lst.de>
To: Kanchan Joshi <joshi.k@samsung.com>
Cc: Christoph Hellwig <hch@lst.de>, Hector Martin <marcan@marcan.st>,
	Sven Peter <sven@svenpeter.dev>, Keith Busch <kbusch@kernel.org>,
	Sagi Grimberg <sagi@grimberg.me>,
	James Smart <james.smart@broadcom.com>,
	Chaitanya Kulkarni <kch@nvidia.com>,
	Alyssa Rosenzweig <alyssa@rosenzweig.io>,
	asahi@lists.linux.dev, linux-nvme@lists.infradead.org
Subject: Re: [PATCH 14/16] nvme: use the atomic queue limits update API
Date: Tue, 26 Mar 2024 15:52:15 +0100	[thread overview]
Message-ID: <20240326145215.GA22423@lst.de> (raw)
In-Reply-To: <0fd68aba-b116-3a0c-c864-909bf2d7e80c@samsung.com>

On Tue, Mar 26, 2024 at 03:54:49PM +0530, Kanchan Joshi wrote:
> > +	ret = queue_limits_commit_update(ns->disk->queue, &lim);
> > +	if (ret) {
> > +		blk_mq_unfreeze_queue(ns->disk->queue);
> > +		goto out;
> > +	}
> 
> Not sure if this has been discussed already.
> But do we need something that does not update the limit but still 
> releases the mutex (q->limits_lock)?
> If nvme_update_zone_info() returns error, the mutex will not be released.

It just came up in the scsi series..

Maybe we'll want a cancel_update version after all.  I thought I'd get
away without it.


  reply	other threads:[~2024-03-26 14:52 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-04 14:04 convert nvme to atomic queue limits updates v2 Christoph Hellwig
2024-03-04 14:04 ` [PATCH 01/16] nvme: set max_hw_sectors unconditionally Christoph Hellwig
2024-03-04 15:56   ` John Garry
2024-03-04 14:04 ` [PATCH 02/16] nvme: move NVME_QUIRK_DEALLOCATE_ZEROES out of nvme_config_discard Christoph Hellwig
2024-03-04 14:04 ` [PATCH 03/16] nvme: remove nvme_revalidate_zones Christoph Hellwig
2024-03-04 14:04 ` [PATCH 04/16] nvme: move max_integrity_segments handling out of nvme_init_integrity Christoph Hellwig
2024-03-04 14:04 ` [PATCH 05/16] nvme: cleanup the nvme_init_integrity calling conventions Christoph Hellwig
2024-03-04 14:04 ` [PATCH 06/16] nvme: move blk_integrity_unregister into nvme_init_integrity Christoph Hellwig
2024-03-04 14:04 ` [PATCH 07/16] nvme: don't use nvme_update_disk_info for the multipath disk Christoph Hellwig
2024-03-04 14:04 ` [PATCH 08/16] nvme: move a few things out of nvme_update_disk_info Christoph Hellwig
2024-03-04 14:04 ` [PATCH 09/16] nvme: move setting the write cache flags out of nvme_set_queue_limits Christoph Hellwig
2024-03-04 14:04 ` [PATCH 10/16] nvme: move common logic into nvme_update_ns_info Christoph Hellwig
2024-03-04 14:04 ` [PATCH 11/16] nvme: split out a nvme_identify_ns_nvm helper Christoph Hellwig
2024-03-04 14:04 ` [PATCH 12/16] nvme: don't query identify data in configure_metadata Christoph Hellwig
2024-03-04 14:04 ` [PATCH 13/16] nvme: cleanup nvme_configure_metadata Christoph Hellwig
2024-03-04 14:04 ` [PATCH 14/16] nvme: use the atomic queue limits update API Christoph Hellwig
2024-03-26 10:24   ` Kanchan Joshi
2024-03-26 14:52     ` Christoph Hellwig [this message]
2024-03-04 14:04 ` [PATCH 15/16] nvme-multipath: pass queue_limits to blk_alloc_disk Christoph Hellwig
2024-03-04 14:05 ` [PATCH 16/16] nvme-multipath: use atomic queue limits API for stacking limits Christoph Hellwig
2024-03-04 16:27 ` convert nvme to atomic queue limits updates v2 Keith Busch
2024-03-07  8:39   ` Sagi Grimberg

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