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SubjectRe: [PATCH 2/2] mm: don't use compound_head() in virt_to_head_page()
On Mon, 5 Jan 2015, Joonsoo Kim wrote:

> This patch implements compound_head_fast() which is similar with
> compound_head() except tail flag race handling. And then,
> virt_to_head_page() uses this optimized function to improve performance.

Yeah that is how it was before and how it should be

Acked-by: Christoph Lameter <cl@linux.com>


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