memcg: memory cgroup hierarchical reclaim

This patch introduces hierarchical reclaim.  When an ancestor goes over
its limit, the charging routine points to the parent that is above its
limit.  The reclaim process then starts from the last scanned child of the
ancestor and reclaims until the ancestor goes below its limit.

[[email protected]: coding-style fixes]
[[email protected]: mem_cgroup_from_res_counter should handle both mem->res and mem->memsw]
Signed-off-by: Balbir Singh <[email protected]>
Cc: YAMAMOTO Takashi <[email protected]>
Cc: Paul Menage <[email protected]>
Cc: Li Zefan <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Pavel Emelianov <[email protected]>
Cc: Dhaval Giani <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Daisuke Nishimura <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions