On Wed, 29 Jun 2011 19:03:25 +0900
KAMEZAWA Hiroyuki [off-list ref] wrote:

Each memory cgroup has 'swappiness' value and it can be accessed by
get_swappiness(memcg). The major user is try_to_free_mem_cgroup_pages()
and swappiness is passed by argument. It's propagated by scan_control.

get_swappiness is static function but some planned updates will need to
get swappiness from files other than memcontrol.c
This patch exports get_swappiness() as mem_cgroup_swappiness().
By this, we can remove the argument of swapiness from try_to_free...
and drop swappiness from scan_control. only memcg uses it.

+extern unsigned int mem_cgroup_swappiness(struct mem_cgroup *mem);
+unsigned int mem_cgroup_swappiness(struct mem_cgroup *memcg)
+static int vmscan_swappiness(struct scan_control *sc)

The patch seems a bit confused about the signedness of swappiness.

--
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>