mm: kmem: reimplement get_obj_cgroup_from_current()

Reimplement get_obj_cgroup_from_current() using current_obj_cgroup(). 
get_obj_cgroup_from_current() and current_obj_cgroup() share 80% of the
code, so the new implementation is almost trivial.

get_obj_cgroup_from_current() is a convenient function used by the
bpf subsystem, so there is no reason to get rid of it completely.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Roman Gushchin (Cruise) <[email protected]>
Reviewed-by: Vlastimil Babka <[email protected]>
Acked-by: Shakeel Butt <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Dennis Zhou <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Naresh Kamboju <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions