Re: [PATCH v1 00/11] Zero page->private when freeing pages
From: Christoph Hellwig
Date: Mon Feb 23 2026 - 08:50:49 EST
On Sun, Feb 22, 2026 at 10:26:30PM -0500, Zi Yan wrote:
> Hi all,
>
> Based on a recent discussion with David Hildenbrand on page->private
> is not zero when a page is freed[1], this patchset is trying to fix all
> users do not zero ->private when freeing a page and add checks to make
> sure all freed pages have ->private set to zero. For compound pages,
> both head page and tail pages need to have ->private set to zero.
Requiring the user to clear a field before freeing is just a way to
awkward interface. Don't do that.