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SubjectRe: [PATCH v18 00/32] per memcg lru_lock
On Tue, Aug 25, 2020 at 11:26:58AM +0800, Alex Shi wrote:
> I tried reusing page->prviate to store lruvec pointer, that could remove some
> regression on this, since private is generally unused on a lru page. But the patch
> is too buggy now.

page->private is for the use of the filesystem. You can grep for
attach_page_private() to see how most filesystems use it.
Some still use set_page_private() for various reasons.

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