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Groups > linux.kernel > #1690672
| From | Alexei Potashnik <alexei@purestorage.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | RE: [PATCH] workqueue: doc change for ST behavior on NUMA systems |
| Date | 2017-07-18 23:40 +0200 |
| Message-ID | <u4InM-7Gm-17@gated-at.bofh.it> (permalink) |
| References | <u4Fgd-5OA-3@gated-at.bofh.it> <u4Gci-6nx-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
target has a bug in TMR handling.
dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM |
WQ_UNBOUND, 1,
dev->transport->name);
LUN_RESET can race with TASK_ABORT in different sessions.
Will send a patch to target list.
-----Original Message-----
From: Christoph Hellwig [mailto:hch@infradead.org]
Sent: Tuesday, July 18, 2017 12:18 PM
To: Alexei Potashnik <alexei@purestorage.com>
Cc: tj@kernel.org; linux-kernel@vger.kernel.org
Subject: Re: [PATCH] workqueue: doc change for ST behavior on NUMA systems
On Tue, Jul 18, 2017 at 11:12:53AM -0700, Alexei Potashnik wrote:
> NUMA rework of workqueue made the combination of max_active of 1 and
> WQ_UNBOUND insufficient to guarantee ST behavior system wide.
>
> alloc_ordered_queue should now be used instead.
Eww. And how many existing users might be broken by that?
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[PATCH] workqueue: doc change for ST behavior on NUMA systems Alexei Potashnik <alexei@purestorage.com> - 2017-07-18 20:20 +0200
Re: [PATCH] workqueue: doc change for ST behavior on NUMA systems Tejun Heo <tj@kernel.org> - 2017-07-18 20:40 +0200
Re: [PATCH] workqueue: doc change for ST behavior on NUMA systems Christoph Hellwig <hch@infradead.org> - 2017-07-18 21:20 +0200
Re: [PATCH] workqueue: doc change for ST behavior on NUMA systems Tejun Heo <tj@kernel.org> - 2017-07-18 21:40 +0200
RE: [PATCH] workqueue: doc change for ST behavior on NUMA systems Alexei Potashnik <alexei@purestorage.com> - 2017-07-18 23:40 +0200
RE: [PATCH] workqueue: doc change for ST behavior on NUMA systems Alexei Potashnik <alexei@purestorage.com> - 2017-07-19 00:30 +0200
[PATCH wq/for-4.13-fixes] workqueue: restore WQ_UNBOUND/max_active==1 to be ordered Tejun Heo <tj@kernel.org> - 2017-07-19 00:50 +0200
Re: [PATCH wq/for-4.13-fixes] workqueue: restore WQ_UNBOUND/max_active==1 to be ordered Tejun Heo <tj@kernel.org> - 2017-07-19 17:30 +0200
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