Re: [PATCH] hugetlb: call arch_prepare_hugepage() for surplus pages

[Adam Litke <agl@us.ibm.com>]

On Tue, 2008-08-05 at 17:29 +0200, Gerald Schaefer wrote:
> From: Gerald Schaefer <gerald.schaefer@de.ibm.com>
> 
> The s390 software large page emulation implements shared page tables
> by using page->index of the first tail page from a compound large page
> to store page table information. This is set up in arch_prepare_hugepage(),
> which is called from alloc_fresh_huge_page_node().
> 
> A similar call to arch_prepare_hugepage() is missing for surplus large
> pages that are allocated in alloc_buddy_huge_page(), which breaks the
> software emulation mode for (surplus) large pages on s390. This patch
> adds the missing call to arch_prepare_hugepage(). It will have no effect
> on other architectures where arch_prepare_hugepage() is a nop.
> 
> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
> Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>

Seems fine.

Acked-by: Adam Litke <agl@us.ibm.com>

-- 
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center

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