memcg: extract mem_group_usage() from mem_cgroup_read()

Helper to get memory or mem+swap usage of the cgroup.

Signed-off-by: Kirill A. Shutemov <[email protected]>
Acked-by: Balbir Singh <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Cc: Li Zefan <[email protected]>
Cc: Pavel Emelyanov <[email protected]>
Cc: Dan Malek <[email protected]>
Cc: Vladislav Buzov <[email protected]>
Cc: Daisuke Nishimura <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Davide Libenzi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions