Re: swapaccount= commandline option

[Narcis Garcia <debianlists@actiu.net>]

El 12/2/24 a les 23:37, Yosry Ahmed ha escrit:
> On Sun, Feb 11, 2024 at 1:33 AM Narcis Garcia <debianlists@actiu.net> wrote:
>>
>> Hello,
>>
>> I read this warning on Linux 6.1 boot:
>> The swapaccount= commandline option is deprecated. Please report your
>> usecase to linux-mm@kvack.org if you depend on this functionality.
>>
>> And I want to know if this impacts on LinuX Containers (LXC) swap
>> accounting.
> 
> swapaccount= was deprecated in the sense that it is always on now
> (i.e. you cannot do swapaccount=0 anymore). I believe you are using
> swapaccount=1 and want to make sure that swap accounting will still
> work with v6.1, right?
> 
> This is the second question we have had about this message [1]. I
> think we need to clarify the warning (and perhaps backport to stable
> kernels).
> 
> [1]https://lore.kernel.org/linux-mm/2593755.Xrv9ptJ69j@sinistra.local/


Thank you for answering this question, and sure this clarification is 
needed both in documentation and warning message.
I've found deprecation message was commited on 26 Sep 2022.
 From what Linux version release, this deprecation is included?

I suggest this for setup_swap_account() code:
pr_warn_once("The swapaccount= commandline option is deprecated. "
	"Swap accounting is always on. "
	"Please report your usecase to linux-mm@kvack.org if you "
	"depend on this functionality.\n");

-- 

Narcis Garcia

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