Messages in this thread | | | Date | Mon, 28 Feb 2011 11:12:00 +0100 | From | Michal Hocko <> | Subject | Re: [RFC PATCH] page_cgroup: Reduce allocation overhead for page_cgroup array for CONFIG_SPARSEMEM v4 |
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On Mon 28-02-11 18:48:21, KAMEZAWA Hiroyuki wrote: > On Mon, 28 Feb 2011 10:53:16 +0100 > > From e7a897a42b526620eb4afada2d036e1c9ff9e62a Mon Sep 17 00:00:00 2001 > > From: Michal Hocko <mhocko@suse.cz> > > Date: Mon, 28 Feb 2011 10:43:12 +0100 > > Subject: [PATCH] page_cgroup array is never stored on reserved pages > > > > KAMEZAWA Hiroyuki noted that free_pages_cgroup doesn't have to check for > > PageReserved because we never store the array on reserved pages > > (neither alloc_pages_exact nor vmalloc use those pages). > > > > So we can replace the check by a BUG_ON. > > > > Signed-off-by: Michal Hocko <mhocko@suse.cz> > > CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> > > Thank you. > Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Thanks!
-- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic
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