Re: [PATCH v4 01/15] fs: Rename the kernel-internal data lifetime constants

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On Mon, Nov 27, 2023 at 02:15:51PM +0530, Kanchan Joshi wrote:
> How about this argument (assuming you may not have seen) from previous 
> iteration [1]-
> 
> "Does it make sense to do away with these, and have temperature-neutral
> names instead e.g., WRITE_LIFE_1, WRITE_LIFE_2?
> 
> With the current choice:
> - If the count goes up (beyond 5 hints), infra can scale fine but these
> names do not. Imagine ULTRA_EXTREME after EXTREME.
> - Applications or in-kernel users can specify LONG hint with data that
> actually has a SHORT lifetime. Nothing really ensures that LONG is
> really LONG.
> 
> Temperature-neutral names seem more generic/scalable and do not present
> the unnecessary need to be accurate with relative temperatures."

I don't really buy it, as that's not the use case we currently have,
which hasn't changed.  And even if we did, life would probably be
simpler if you decoupled it from this series..

But IFF we decided to do away with the meanings, having constants
that just are numbered simply doesn't make any sense.




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