Re: [patch] mm: introduce a common interface for balloon pages mobility fix

[Rafael Aquini <aquini@redhat.com>]

On Tue, Nov 27, 2012 at 04:15:59PM -0800, David Rientjes wrote:
> It's useful to keep memory defragmented so that all high-order page 
> allocations have a chance to succeed, not simply transparent hugepages.  
> Thus, allow balloon compaction for any system with memory compaction 
> enabled, which is the defconfig.
> 
> Signed-off-by: David Rientjes <rientjes@google.com>
> ---
Thanks David

Acked-by: Rafael Aquini <aquini@redhat.com>


>  mm/Kconfig |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/mm/Kconfig b/mm/Kconfig
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -200,7 +200,7 @@ config SPLIT_PTLOCK_CPUS
>  config BALLOON_COMPACTION
>  	bool "Allow for balloon memory compaction/migration"
>  	def_bool y
> -	depends on TRANSPARENT_HUGEPAGE && VIRTIO_BALLOON
> +	depends on COMPACTION && VIRTIO_BALLOON
>  	help
>  	  Memory fragmentation introduced by ballooning might reduce
>  	  significantly the number of 2MB contiguous memory blocks that can be

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