From: hch@infradead.org (hch@infradead.org)
Subject: Block integrity registration update
Date: Tue, 13 Oct 2015 05:26:08 -0700 [thread overview]
Message-ID: <20151013122608.GA18816@infradead.org> (raw)
In-Reply-To: <1444701214.9780.23.camel@intel.com>
On Tue, Oct 13, 2015@01:53:34AM +0000, Williams, Dan J wrote:
> ...i.e. that we're destroying the integrity profile while i/o is still
> in flight. As far as I can see any driver that calls
> blk_integrity_unregister() before blk_cleanup_queue() can hit this.
>
> However, with the change to static allocation I'm not sure why a driver
> would ever need to call blk_integrity_unregister() in its shutdown path.
It shouldn't.
> It seems this would only be necessary for disabling integrity at run
> time, but it can only do it safely when the queue is known to be idle.
Yes. And even for that case we should a) only clear ->flags not the
whole integrity profile (and fix blk_integrity_revalidate to check the
right thing) and b) clear flags before calling blk_integrity_revalidate.
> Is there a way to solve this without the generic blk_freeze_queue()
> implementation? [1]. The immediate fix for libnvdimm is to just stop
> calling blk_integrity_unregister().
Seems like only nvme ever updates the profile, and nvme is blk-mq
only.
next prev parent reply other threads:[~2015-10-13 12:26 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-14 17:57 [PATCH] NVMe: Reread partitions on metadata formats Keith Busch
2015-07-14 18:49 ` Jens Axboe
2015-07-14 19:01 ` Paul Grabinar
2015-07-15 3:48 ` Dan Williams
2015-07-15 21:36 ` Jens Axboe
2015-07-15 22:28 ` Keith Busch
2015-07-16 9:19 ` Christoph Hellwig
2015-07-17 1:47 ` Martin K. Petersen
2015-07-17 9:30 ` Christoph Hellwig
2015-07-21 6:02 ` Data integrity tweaks Martin K. Petersen
2015-07-21 6:02 ` [PATCH 1/5] block: Move integrity kobject to struct gendisk Martin K. Petersen
2015-07-22 11:32 ` Sagi Grimberg
2015-07-21 6:02 ` [PATCH 2/5] block: Consolidate static integrity profile properties Martin K. Petersen
2015-07-22 11:33 ` Sagi Grimberg
2015-07-21 6:02 ` [PATCH 3/5] block: Reduce the size of struct blk_integrity Martin K. Petersen
2015-07-21 11:53 ` Christoph Hellwig
2015-07-24 15:14 ` Martin K. Petersen
2015-07-22 11:35 ` Sagi Grimberg
2015-07-21 6:02 ` [PATCH 4/5] block: Export integrity data interval size in sysfs Martin K. Petersen
2015-07-22 11:37 ` Sagi Grimberg
2015-07-24 15:26 ` Martin K. Petersen
2015-07-21 6:02 ` [PATCH 5/5] block: Inline blk_integrity in struct gendisk Martin K. Petersen
2015-07-21 12:01 ` Christoph Hellwig
2015-08-20 20:41 ` Simplify block integrity registration Martin K. Petersen
2015-08-20 20:41 ` [PATCH 1/5] block: Move integrity kobject to struct gendisk Martin K. Petersen
2015-09-16 17:26 ` Mike Snitzer
2015-08-20 20:41 ` [PATCH 2/5] block: Consolidate static integrity profile properties Martin K. Petersen
2015-08-20 20:41 ` [PATCH 3/5] block: Reduce the size of struct blk_integrity Martin K. Petersen
2015-08-20 20:41 ` [PATCH 4/5] block: Export integrity data interval size in sysfs Martin K. Petersen
2015-08-20 20:41 ` [PATCH 5/5] block: Inline blk_integrity in struct gendisk Martin K. Petersen
2015-08-21 23:47 ` Busch, Keith
2015-08-27 0:25 ` Martin K. Petersen
2015-08-27 0:25 ` [PATCH] " Martin K. Petersen
2015-08-27 8:28 ` Christoph Hellwig
2015-09-03 20:38 ` Keith Busch
2015-09-04 3:25 ` Martin K. Petersen
2015-10-12 21:05 ` Block integrity registration update Martin K. Petersen
2015-10-12 21:05 ` [PATCH 1/5] block: Move integrity kobject to struct gendisk Martin K. Petersen
2015-10-12 21:05 ` [PATCH 2/5] block: Consolidate static integrity profile properties Martin K. Petersen
2015-10-14 1:11 ` Dan Williams
2015-10-14 7:23 ` Christoph Hellwig
2015-10-14 19:42 ` Williams, Dan J
2015-10-14 19:47 ` hch
2015-10-14 20:00 ` Williams, Dan J
2015-10-14 22:42 ` Martin K. Petersen
2015-10-12 21:05 ` [PATCH 3/5] block: Reduce the size of struct blk_integrity Martin K. Petersen
2015-10-12 21:05 ` [PATCH 4/5] block: Export integrity data interval size in sysfs Martin K. Petersen
2015-10-12 21:05 ` [PATCH 5/5] block: Inline blk_integrity in struct gendisk Martin K. Petersen
2015-10-12 23:06 ` Mike Snitzer
2015-10-13 0:31 ` Block integrity registration update Williams, Dan J
2015-10-13 1:53 ` Williams, Dan J
2015-10-13 12:26 ` hch [this message]
2015-10-13 17:38 ` Dan Williams
2015-09-16 1:07 ` [PATCH 5/5] block: Inline blk_integrity in struct gendisk Mike Snitzer
2015-09-21 20:45 ` Mike Snitzer
2015-10-09 7:36 ` Christoph Hellwig
2015-10-12 1:17 ` Martin K. Petersen
2015-08-20 20:45 ` Simplify block integrity registration Mike Snitzer
2015-07-17 1:44 ` [PATCH] NVMe: Reread partitions on metadata formats Martin K. Petersen
2015-07-15 17:37 ` Paul Grabinar
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