Re: [PATCH v4 2/5] memcg : pass scan nodemask
From: Michal Hocko <hidden>
Date: 2011-08-01 14:00:05
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lkml
On Wed 27-07-11 14:47:42, KAMEZAWA Hiroyuki wrote:
pass memcg's nodemask to try_to_free_pages(). try_to_free_pages can take nodemask as its argument but memcg doesn't pass it. Considering memcg can be used with cpuset on big NUMA, memcg should pass nodemask if available. Now, memcg maintain nodemask with periodic updates. pass it. Signed-off-by: KAMEZAWA Hiroyuki <redacted> --- include/linux/memcontrol.h | 2 +- mm/memcontrol.c | 8 ++++++-- mm/vmscan.c | 3 ++- 3 files changed, 9 insertions(+), 4 deletions(-)
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quoted hunk ↗ jump to hunk
Index: mmotm-0710/mm/vmscan.c ===================================================================--- mmotm-0710.orig/mm/vmscan.c +++ mmotm-0710/mm/vmscan.c@@ -2280,6 +2280,7 @@ unsigned long try_to_free_mem_cgroup_pag unsigned long nr_reclaimed; unsigned long start, end; int nid; + nodemask_t *mask; struct scan_control sc = { .may_writepage = !laptop_mode, .may_unmap = 1,@@ -2302,7 +2303,7 @@ unsigned long try_to_free_mem_cgroup_pag * take care of from where we get pages. So the node where we start the * scan does not need to be the current node. */ - nid = mem_cgroup_select_victim_node(mem_cont); + nid = mem_cgroup_select_victim_node(mem_cont, &mask);
The mask is not used anywhere AFAICS and using it is a point of the patch AFAIU. I guess you wanted to use &sc.nodemask, right? Other than that, looks good to me. Reviewed-by: Michal Hocko <redacted> -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>