mm: memcg: move cgroup v1 oom handling code into memcontrol-v1.c

Cgroup v1 supports a complicated OOM handling in userspace mechanism,
which is not supported by cgroup v2.  Let's move the corresponding code
into memcontrol-v1.c.

Aside from mechanical code movement this patch introduces two new
functions: memcg1_oom_prepare() and memcg1_oom_finish().  Those are
implementing cgroup v1-specific parts of the common memcg OOM handling
path.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Roman Gushchin <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Shakeel Butt <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Muchun Song <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions