On Thu, 21 Apr 2011 21:24:12 -0700 Ying Han <yinghan@xxxxxxxxxx> wrote: > There is a kswapd kernel thread for each numa node. We will add a different > kswapd for each memcg. The kswapd is sleeping in the wait queue headed at > kswapd_wait field of a kswapd descriptor. The kswapd descriptor stores > information of node and memcgs, and it allows the global and per-memcg > background reclaim to share common reclaim algorithms. > > This patch adds the kswapd descriptor and moves the per-node kswapd to use the > new structure. > > changelog v7..v6: > 1. revert wait_queue_head change in pgdat. Keep the wait_queue_head in pgdat > > changelog v6..v5: > 1. rename kswapd_thr to kswapd_tsk > 2. revert the api change on sleeping_prematurely since memcg doesn't support it. > > changelog v5..v4: > 1. add comment on kswapds_spinlock > 2. remove the kswapds_spinlock. we don't need it here since the kswapd and pgdat > have 1:1 mapping. > > changelog v3..v2: > 1. move the struct mem_cgroup *kswapd_mem in kswapd sruct to later patch. > 2. rename thr in kswapd_run to something else. > > changelog v2..v1: > 1. dynamic allocate kswapd descriptor and initialize the wait_queue_head of pgdat > at kswapd_run. > 2. add helper macro is_node_kswapd to distinguish per-node/per-cgroup kswapd > descriptor. > > Signed-off-by: Ying Han <yinghan@xxxxxxxxxx> > Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Seems ok to me. Thank you for merging my dirty patch. If I add comments to this patch, this patch is just for sharing codes in kswapd and memory cgroup's background reclaim. By this, it's easy to compare memcg bacground reclaim and kswapd and will be good for maintainance. Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx 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@xxxxxxxxx";> email@xxxxxxxxx </a>