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From: Jason Gunthorpe <jgg@ziepe.ca>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Zhu Yanjun <yanjun.zhu@linux.dev>,
	Bob Pearson <rpearsonhpe@gmail.com>,
	Leon Romanovsky <leon@kernel.org>,
	zyjzyj2000@gmail.com, linux-rdma@vger.kernel.org,
	matsuda-daisuke@fujitsu.com, shinichiro.kawasaki@wdc.com,
	linux-scsi@vger.kernel.org, Zhu Yanjun <yanjun.zhu@intel.com>
Subject: Re: [PATCH 1/1] Revert "RDMA/rxe: Add workqueue support for rxe tasks"
Date: Wed, 4 Oct 2023 15:38:24 -0300	[thread overview]
Message-ID: <20231004183824.GQ13795@ziepe.ca> (raw)
In-Reply-To: <552f2342-e800-43bc-b859-d73297ce940f@acm.org>

On Wed, Oct 04, 2023 at 10:43:20AM -0700, Bart Van Assche wrote:

> Thank you for having reported this. I'm OK with integrating the
> above change in my patch. However, code changes must be
> motivated. Do you perhaps have an explanation of why WQ_HIGHPRI
> makes the issue disappear that you observed?

I think it is clear there are locking bugs in all this, so it is not
surprising that changing the scheduling behavior can make locking bugs
hide

Jason

  reply	other threads:[~2023-10-04 18:38 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-22 16:32 [PATCH 1/1] Revert "RDMA/rxe: Add workqueue support for rxe tasks" Zhu Yanjun
2023-09-22 16:42 ` Bart Van Assche
2023-09-26  9:43   ` Leon Romanovsky
2023-09-26  9:43 ` Leon Romanovsky
2023-09-26 14:06   ` Leon Romanovsky
2023-09-26 17:05     ` Bart Van Assche
2023-09-26 18:34       ` Bob Pearson
2023-09-26 20:24         ` Bart Van Assche
2023-09-27  0:08           ` Rain River
2023-09-27 16:36           ` Bob Pearson
2023-09-27 16:51           ` Bob Pearson
2023-10-01  6:30             ` Leon Romanovsky
2023-10-04 17:44               ` Bart Van Assche
2023-10-04  3:41           ` Zhu Yanjun
2023-10-04 17:43             ` Bart Van Assche
2023-10-04 18:38               ` Jason Gunthorpe [this message]
2023-10-05  9:25                 ` Zhu Yanjun
2023-10-05 14:21                   ` Jason Gunthorpe
2023-10-05 14:50                     ` Bart Van Assche
2023-10-05 15:56                       ` Jason Gunthorpe
2023-10-06 15:58                         ` Bob Pearson
2023-10-07  0:35                           ` Zhu Yanjun
2023-10-08 16:01                       ` Zhu Yanjun
2023-10-08 17:09                         ` Leon Romanovsky
2023-10-10  4:53                         ` Daisuke Matsuda (Fujitsu)
2023-10-10 16:09                           ` Jason Gunthorpe
2023-10-10 21:29                             ` Bart Van Assche
2023-10-11 15:51                               ` Jason Gunthorpe
2023-10-11 20:14                                 ` Bart Van Assche
2023-10-11 23:12                                   ` Jason Gunthorpe
2023-10-12 11:49                                     ` Zhu Yanjun
2023-10-12 15:38                                       ` Bob Pearson

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