Messages in this thread Patch in this message | | | Subject | [PATCH] memcg: do not recalculate section unnecessarily in init_section_page_cgroup | From | Fernando Luis Vázquez Cao <> | Date | Thu, 30 Oct 2008 13:38:50 +0900 |
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Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> ---
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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