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memory cgroup enhancements: fix zone handling in try_to_free_mem_cgroup_page

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Because NODE_DATA(node)->node_zonelists[] is guaranteed to contain all
necessary zones, it is not necessary to use for_each_online_node.

And this for_each_online_node() makes reclaim routine start always
from node 0. This is not good. This patch makes reclaim start from
caller's node and just use usual (default) zonelist order.

[[email protected]: fix warning]
Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Pavel Emelianov <[email protected]>
Cc: Paul Menage <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Kirill Korotaev <[email protected]>
Cc: Herbert Poetzl <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Vaidyanathan Srinivasan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KAMEZAWA Hiroyuki 2008-02-07 00:14:14 -08:00 • committed by Linus Torvalds
commit 417eead304
1 changed files with 3 additions and 6 deletions
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9
mm/vmscan.c
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@ -1365,15 +1365,12 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
.mem_cgroup = mem_cont,
.isolate_pages = mem_cgroup_isolate_pages,
};
int node;
struct zone **zones;
int target_zone = gfp_zone(GFP_HIGHUSER_MOVABLE);
for_each_online_node(node) {
zones = NODE_DATA(node)->node_zonelists[target_zone].zones;
if (do_try_to_free_pages(zones, sc.gfp_mask, &sc))
return 1;
}
zones = NODE_DATA(numa_node_id())->node_zonelists[target_zone].zones;
if (do_try_to_free_pages(zones, sc.gfp_mask, &sc))
return 1;
return 0;
}
#endif