Re: [External Mail] [RFC PATCH] mm/mempolicy: Weighted interleave auto-tuning

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Gregory Price <gourry@xxxxxxxxxx> writes:

> On Fri, Dec 27, 2024 at 09:59:30AM +0800, Huang, Ying wrote:
>> Gregory Price <gourry@xxxxxxxxxx> writes:
>> > This still allows 0 to be a manual "reset specific node to default"
>> > mechanism for a specific node, and gives us a clean override.
>> 
>> The difficulty is that users don't know the default value when they
>> reset a node's weight.  We don't have an interface to show them.  So, I
>> suggest to disable the functionality: "reset specific node to default".
>> They can still use "echo 1 > use_defaults" to reset all nodes to
>> default.
>>
>
> Good point, and agree.  So lets just ditch 0.  Since that "feature"
> wasn't even functional in the current code (it just reset it to 1 at
> this point), it's probably safe to just ditch it.  Worst case scenario
> if someone takes issues, we can just have it revert the weight to 1.

Before implementing the new version, it's better to summarize the user
space interface design first.  So, we can check whether we have some
flaws.

---
Best Regards,
Huang, Ying




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