linux-kernel - Re: [PATCH 0/8] Introduce a huge-page pre-zeroing mechanism

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Message-ID: <CAPTztWZroGx5AqB-2+EmSnqsCRtRjw5uvrNi_h7=JefZURB6Lw@mail.gmail.com>
Date: Fri, 26 Dec 2025 13:42:13 -0800
From: Frank van der Linden <fvdl@...gle.com>
To: 李喆 <lizhe.67@...edance.com>
Cc: muchun.song@...ux.dev, osalvador@...e.de, david@...nel.org, 
	akpm@...ux-foundation.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/8] Introduce a huge-page pre-zeroing mechanism

Is there any situation where you would write anything else than 'max'
to the new sysfs file? E.g. in which scenarios does it make sense to
*not* pre-zero all freed hugetlb folios? There doesn't seem to be a
point to just doing a certain number. You can't know for sure if the
number you read will remain correct, as it's just a snapshot. So how
would you determine a correct number other than 'max'?

- Frank