Re: [PATCH v2] mm/list_lru: Fix possible race in memcg_reparent_list_lru_node()

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On Wed, Mar 30, 2022 at 07:48:45PM -0700, Roman Gushchin wrote:
> 
> 
[...]
> 
> 
> But honestly, I’d drop the original optimization together with the fix, if only there is no _real world_ data on the problem and the improvement. It seems like it has started as a nice simple improvement, but the race makes it complex and probably not worth the added complexity and fragility.

I agree with dropping the original optimization as it is not really
fixing an observed issue which may justify adding some complexity.

thanks,
Shakeel





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