Messages in this thread | | | Date | Thu, 27 Sep 2012 09:20:57 +0800 | From | Fengguang Wu <> | Subject | Re: [PATCH v4] kpageflags: fix wrong KPF_THP on non-huge compound pages |
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> - else if (PageTransCompound(page)) > + /* > + * PageTransCompound can be true for non-huge compound pages (slab > + * pages or pages allocated by drivers with __GFP_COMP) because it > + * just checks PG_head/PG_tail, so we need to check PageLRU to make > + * sure a given page is a thp, not a non-huge compound page. > + */ > + else if (PageTransCompound(page) && PageLRU(compound_trans_head(page))) > u |= 1 << KPF_THP;
Reviewed-by: Fengguang Wu <fengguang.wu@intel.com>
Thanks!
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