Re: new memory hotremoval patch

[Arjan van de Ven]

> Page "remapping" is a mechanism to free a specified page by copying the
> page content to a newly allocated replacement page and redirecting
> references to the original page to the new page.
> This was designed to reliably free specified pages, unlike the swapout
> code.

are you 100% sure the locking is correct wrt O_DIRECT, AIO or futexes ??

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