Re: [PATCH v2] mm: fix unexpected changes to {failslab|fail_page_alloc}.attr

[Jason Gunthorpe]

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