Re: [PATCHv2 13/28] thp: support file pages in zap_huge_pmd()
From: Dave Hansen
Date: Fri Feb 12 2016 - 13:33:41 EST
On 02/11/2016 06:21 AM, Kirill A. Shutemov wrote:
> For file pages we don't deposit page table on mapping: no need to
> withdraw it.
I thought the deposit thing was to guarantee we could always do a PMD
split. It still seems like if you wanted to split a huge-tmpfs page,
you'd need to first split the PMD which might need the deposited one.
Why not?