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From: Ulf Hansson <ulf.hansson@linaro.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Chris Zankel <chris@zankel.net>,
	Max Filippov <jcmvbkbc@gmail.com>,
	Philipp Reisner <philipp.reisner@linbit.com>,
	Lars Ellenberg <lars.ellenberg@linbit.com>,
	Jim Paris <jim@jtan.com>,
	Joshua Morris <josh.h.morris@us.ibm.com>,
	Philip Kelleher <pjk1939@linux.ibm.com>,
	Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>,
	Matias Bjorling <mb@lightnvm.io>, Coly Li <colyli@suse.de>,
	Mike Snitzer <snitzer@redhat.com>, Song Liu <song@kernel.org>,
	Maxim Levitsky <maximlevitsky@gmail.com>,
	Alex Dubov <oakad@yahoo.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Vishal Verma <vishal.l.verma@intel.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	linux-block <linux-block@vger.kernel.org>,
	dm-devel@redhat.com, linux-m68k@lists.linux-m68k.org,
	linux-xtensa@linux-xtensa.org, drbd-dev@lists.linbit.com,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org,
	linux-mmc <linux-mmc@vger.kernel.org>,
	nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org,
	linux-s390@vger.kernel.org
Subject: Re: simplify gendisk and request_queue allocation for bio based drivers
Date: Wed, 26 May 2021 10:07:31 +0200	[thread overview]
Message-ID: <CAPDyKFpR0maO_Dj6bxWSLvh_jcGnrcZ=na42atXfNdkmMkmdig@mail.gmail.com> (raw)
In-Reply-To: <20210526044943.GA28551@lst.de>

On Wed, 26 May 2021 at 06:49, Christoph Hellwig <hch@lst.de> wrote:
>
> On Wed, May 26, 2021 at 12:41:37AM +0200, Ulf Hansson wrote:
> > On Fri, 21 May 2021 at 07:51, Christoph Hellwig <hch@lst.de> wrote:
> > >
> > > Hi all,
> > >
> > > this series is the first part of cleaning up lifetimes and allocation of
> > > the gendisk and request_queue structure.  It adds a new interface to
> > > allocate the disk and queue together for bio based drivers, and a helper
> > > for cleanup/free them when a driver is unloaded or a device is removed.
> >
> > May I ask what else you have in the pipe for the next steps?
> >
> > The reason why I ask is that I am looking into some issues related to
> > lifecycle problems of gendisk/mmc, typically triggered at SD/MMC card
> > removal.
>
> In the short run not much more than superficial cleanups.  Eventually
> I want bio based drivers to not require a separate request_queue, leaving
> that purely as a data structure for blk-mq based drivers.  But it will
> take a while until we get there, so it should not block any fixes.

Alright, thanks for clarifying.

>
> For hot unplug handling it might be worth to take a look at nvme, as it
> is tested a lot for that case.

Okay, thanks for the hint.

Kind regards
Uffe

  reply	other threads:[~2021-05-26  8:08 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-21  5:50 simplify gendisk and request_queue allocation for bio based drivers Christoph Hellwig
2021-05-21  5:50 ` [PATCH 01/26] block: refactor device number setup in __device_add_disk Christoph Hellwig
2021-05-21 17:16   ` [dm-devel] " Luis Chamberlain
2021-05-24  7:20     ` Christoph Hellwig
2021-05-23  7:46   ` Hannes Reinecke
2021-05-24  7:22     ` Christoph Hellwig
2021-05-21  5:50 ` [PATCH 02/26] block: move the DISK_MAX_PARTS sanity check into __device_add_disk Christoph Hellwig
2021-05-21 17:18   ` [dm-devel] " Luis Chamberlain
2021-05-23  7:48   ` Hannes Reinecke
2021-05-21  5:50 ` [PATCH 03/26] block: automatically enable GENHD_FL_EXT_DEVT Christoph Hellwig
2021-05-21 17:22   ` [dm-devel] " Luis Chamberlain
2021-05-23  7:50   ` Hannes Reinecke
2021-05-21  5:50 ` [PATCH 04/26] block: add a flag to make put_disk on partially initalized disks safer Christoph Hellwig
2021-05-21 17:28   ` [dm-devel] " Luis Chamberlain
2021-05-23  7:54   ` Hannes Reinecke
2021-05-21  5:50 ` [PATCH 05/26] block: add blk_alloc_disk and blk_cleanup_disk APIs Christoph Hellwig
2021-05-21 17:44   ` [dm-devel] " Luis Chamberlain
2021-05-24  7:24     ` Christoph Hellwig
2021-05-23  7:55   ` Hannes Reinecke
2021-05-21  5:50 ` [PATCH 06/26] brd: convert to blk_alloc_disk/blk_cleanup_disk Christoph Hellwig
2021-05-23  7:58   ` Hannes Reinecke
2021-05-24  7:24     ` Christoph Hellwig
2021-05-21  5:50 ` [PATCH 07/26] drbd: " Christoph Hellwig
2021-05-23  7:59   ` Hannes Reinecke
2021-05-21  5:50 ` [PATCH 08/26] pktcdvd: " Christoph Hellwig
2021-05-23  8:00   ` Hannes Reinecke
2021-05-21  5:50 ` [PATCH 09/26] rsxx: " Christoph Hellwig
2021-05-23  8:01   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 10/26] zram: " Christoph Hellwig
2021-05-23  8:01   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 11/26] lightnvm: " Christoph Hellwig
2021-05-23  8:02   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 12/26] bcache: " Christoph Hellwig
2021-05-21  6:15   ` Coly Li
2021-05-21  6:23     ` Christoph Hellwig
2021-05-23 16:19       ` Coly Li
2021-05-23  8:04   ` Hannes Reinecke
2021-05-23 16:20   ` Coly Li
2021-05-21  5:51 ` [PATCH 13/26] dm: " Christoph Hellwig
2021-05-23  8:10   ` Hannes Reinecke
2021-05-24  7:25     ` Christoph Hellwig
2021-05-21  5:51 ` [PATCH 14/26] md: " Christoph Hellwig
2021-05-23  8:12   ` Hannes Reinecke
2021-05-24  7:26     ` Christoph Hellwig
2021-05-24  8:27       ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 15/26] nvdimm-blk: " Christoph Hellwig
2021-05-23  8:13   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 16/26] nvdimm-btt: " Christoph Hellwig
2021-05-23  8:14   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 17/26] nvdimm-pmem: " Christoph Hellwig
2021-05-23  8:14   ` Hannes Reinecke
2021-06-07  4:43   ` Dan Williams
2021-05-21  5:51 ` [PATCH 18/26] nvme-multipath: " Christoph Hellwig
2021-05-23  8:20   ` Hannes Reinecke
2021-05-24  7:29     ` Christoph Hellwig
2021-05-21  5:51 ` [PATCH 19/26] nfblock: " Christoph Hellwig
2021-05-21  8:37   ` Geert Uytterhoeven
2021-05-23  8:21   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 20/26] simdisk: " Christoph Hellwig
2021-05-23  8:22   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 21/26] n64cart: convert to blk_alloc_disk Christoph Hellwig
2021-05-23  8:22   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 22/26] ps3vram: convert to blk_alloc_disk/blk_cleanup_disk Christoph Hellwig
2021-05-23  8:23   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 23/26] dcssblk: " Christoph Hellwig
2021-05-23  8:23   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 24/26] xpram: " Christoph Hellwig
2021-05-23  8:24   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 25/26] null_blk: " Christoph Hellwig
2021-05-23  8:25   ` Hannes Reinecke
2021-05-21  5:51 ` [PATCH 26/26] block: unexport blk_alloc_queue Christoph Hellwig
2021-05-23  8:26   ` Hannes Reinecke
2021-05-25 22:41 ` simplify gendisk and request_queue allocation for bio based drivers Ulf Hansson
2021-05-26  4:49   ` Christoph Hellwig
2021-05-26  8:07     ` Ulf Hansson [this message]
2021-06-01 13:48 ` Jens Axboe
  -- strict thread matches above, loose matches on Subject: below --
2021-05-21  5:50 Christoph Hellwig

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