Re: [PATCH 13 of 31] add pmd mangling functions to x86

Rik van Riel
2010-01-26T17:11:49Z

On 01/26/2010 08:52 AM, Andrea Arcangeli wrote:
> From: Andrea Arcangeli<aarcange@redhat.com>
>
> Add needed pmd mangling functions with simmetry with their pte counterparts.
> pmdp_freeze_flush is the only exception only present on the pmd side and it's
> needed to serialize the VM against split_huge_page, it simply atomically clears
> the present bit in the same way pmdp_clear_flush_young atomically clears the
> accessed bit (and both need to flush the tlb to make it effective, which is
> mandatory to happen synchronously for pmdp_freeze_flush).
>
> Signed-off-by: Andrea Arcangeli<aarcange@redhat.com>

Acked-by: Rik van Riel <riel@redhat.com>

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