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From: Jason Gunthorpe <jgg@nvidia.com>
To: Wei Yongjun <weiyongjun1@huawei.com>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>,
	dvyukov@google.com, willy@infradead.org, akinobu.mita@gmail.com,
	akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [PATCH v2] mm: fix unexpected changes to {failslab|fail_page_alloc}.attr
Date: Tue, 8 Nov 2022 08:04:51 -0400	[thread overview]
Message-ID: <Y2pF4x4gsKjaHJaE@nvidia.com> (raw)
In-Reply-To: <e644e4bf-f1e0-3e22-7773-62f38f9b8963@huawei.com>

On Tue, Nov 08, 2022 at 05:32:52PM +0800, Wei Yongjun wrote:
> > So you want to set/clear this no_warn attr through the procfs or sysfs
> > interface, so that you can easily disable/enable the slab/page fault
> > warning message from the user mode. Right?
> 
> Yes, just like:
> 
> echo 1 > /sys/kernel/debug/failslab/no_warn  #disable message
> echo 0 > /sys/kernel/debug/failslab/no_warn  #enable message

You can already do that:

 echo 0 > /sys/kernel/debug/failslab/verbose  #disable message

Jason

  parent reply	other threads:[~2022-11-08 12:05 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-03 19:09 xarray, fault injection and syzkaller Jason Gunthorpe
2022-11-03 20:00 ` Matthew Wilcox
2022-11-03 20:07   ` Jason Gunthorpe
2022-11-04  0:11     ` Dmitry Vyukov
2022-11-04  0:21       ` Jason Gunthorpe
2022-11-04 17:47         ` Dmitry Vyukov
2022-11-04 18:03           ` Jason Gunthorpe
2022-11-04 18:21             ` Dmitry Vyukov
2022-11-04 18:30               ` Jason Gunthorpe
2022-11-04 18:38                 ` Dmitry Vyukov
2022-11-04 18:45                   ` Jason Gunthorpe
2022-11-04 22:43               ` Qi Zheng
2022-11-05 12:16                 ` Qi Zheng
2022-11-06 17:36                   ` Dmitry Vyukov
2022-11-07  2:13                     ` Qi Zheng
2022-11-07  3:31                     ` [PATCH] mm: fix unexpected changes to {failslab|fail_page_alloc}.attr Qi Zheng
2022-11-07 12:42                       ` Jason Gunthorpe
2022-11-07 15:05                         ` Qi Zheng
2022-11-07 16:26                           ` Jason Gunthorpe
2022-11-08  2:47                             ` Qi Zheng
2022-11-08  3:52                             ` [PATCH v2] " Qi Zheng
2022-11-08  8:44                               ` Wei Yongjun
2022-11-08  8:58                                 ` Qi Zheng
2022-11-08  9:32                                   ` Wei Yongjun
2022-11-08  9:45                                     ` Qi Zheng
2022-11-08 12:04                                     ` Jason Gunthorpe [this message]
2022-11-09  3:57                                       ` Wei Yongjun
2022-11-08 17:36                               ` Akinobu Mita
2022-11-14  3:59                                 ` Qi Zheng
2022-11-04 18:42             ` xarray, fault injection and syzkaller Dmitry Vyukov

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