Messages in this thread | | | Subject | Re: [RFC PATCH] page_cgroup: Reduce allocation overhead for page_cgroup array for CONFIG_SPARSEMEM | From | Dave Hansen <> | Date | Wed, 23 Feb 2011 10:19:22 -0800 |
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On Wed, 2011-02-23 at 16:10 +0100, Michal Hocko wrote: > We can reduce this internal fragmentation by splitting the single > page_cgroup array into more arrays where each one is well kmalloc > aligned. This patch implements this idea.
How about using alloc_pages_exact()? These things aren't allocated often enough to really get most of the benefits of being in a slab. That'll at least get you down to a maximum of about PAGE_SIZE wasted.
-- Dave
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