linux-kernel - Re: [PATCH v5 08/12] mm: enable lazy

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Message-ID: <703cbee6-a813-4970-9232-34ee91ed8961@arm.com>
Date: Wed, 3 Dec 2025 09:20:57 +0100
From: Kevin Brodsky <kevin.brodsky@....com>
To: Alexander Gordeev <agordeev@...ux.ibm.com>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 Andreas Larsson <andreas@...sler.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Boris Ostrovsky <boris.ostrovsky@...cle.com>, Borislav Petkov
 <bp@...en8.de>, Catalin Marinas <catalin.marinas@....com>,
 Christophe Leroy <christophe.leroy@...roup.eu>,
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 Michael Ellerman <mpe@...erman.id.au>, Michal Hocko <mhocko@...e.com>,
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 Vlastimil Babka <vbabka@...e.cz>, Will Deacon <will@...nel.org>,
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 linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org,
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Subject: Re: [PATCH v5 08/12] mm: enable lazy_mmu sections to nest

On 28/11/2025 14:55, Alexander Gordeev wrote:
>> + * in_lazy_mmu_mode() can be used to check whether the lazy MMU mode is
>> + * currently enabled.
> The in_lazy_mmu_mode() name looks ambiguous to me. When the lazy MMU mode
> is paused are we still in lazy MMU mode? The __task_lazy_mmu_mode_active()
> implementation suggests we are not, while one could still assume we are,
> just paused.
>
> Should in_lazy_mmu_mode() be named e.g. as in_active_lazy_mmu_mode() such
> a confusion would not occur in the first place.

I see your point, how about is_lazy_mmu_mode_active()?

- Kevin