Messages in this thread | | | Date | Thu, 30 Oct 2008 15:45:32 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [PATCH] memcg: do not recalculate section unnecessarily in init_section_page_cgroup |
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On Thu, 30 Oct 2008 13:38:50 +0900 Fernando Luis Vázquez Cao <fernando@oss.ntt.co.jp> wrote:
> Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> > --- > Thanks, but please add patch description "what this patch fixes". Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> diff -urNp linux-2.6.28-rc2-mm1-orig/mm/page_cgroup.c linux-2.6.28-rc2-mm1/mm/page_cgroup.c > --- linux-2.6.28-rc2-mm1-orig/mm/page_cgroup.c 2008-10-30 12:49:27.000000000 +0900 > +++ linux-2.6.28-rc2-mm1/mm/page_cgroup.c 2008-10-30 12:52:41.000000000 +0900 > @@ -99,13 +99,11 @@ struct page_cgroup *lookup_page_cgroup(s > > int __meminit init_section_page_cgroup(unsigned long pfn) > { > - struct mem_section *section; > + struct mem_section *section = __pfn_to_section(pfn); > struct page_cgroup *base, *pc; > unsigned long table_size; > int nid, index; > > - section = __pfn_to_section(pfn); > - > if (section->page_cgroup) > return 0; > > @@ -131,7 +129,6 @@ int __meminit init_section_page_cgroup(u > __init_page_cgroup(pc, pfn + index); > } > > - section = __pfn_to_section(pfn); > section->page_cgroup = base - pfn; > total_usage += table_size; > return 0; > > >
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