Revert "mm, oom: base root bonus on current usage"

This reverts commit 7f3bf5da179af2d3d7f36a12315143378da43adc.
Revert "mm, oom: prefer thread group leaders for display purposes"

This reverts commit b495f9e76b09c2ce7e8431c182826628ac07cb15.
Revert "oom_kill: add rcu_read_lock() into find_lock_task_mm()"

This reverts commit 6a7ccbb756702f6244c7a4d79f5147ac751f5063.
Revert "oom_kill: has_intersects_mems_allowed() needs rcu_read_lock()"

This reverts commit 5069d3208970a2b4b67b0ba9e983ba7c99f57484.
Revert "oom_kill: change oom_kill.c to use for_each_thread()"

This reverts commit b30c691d81279aa8d16a147e93cb0262466cfea3.
Revert "mm/oom_kill: remove weird use of ERR_PTR()/PTR_ERR()."

This reverts commit 4febf2bdb881105e5ca85216a85d41836c4661b1.
Revert "mm, oom: remove redundant sleep in pagefault oom handler"

This reverts commit 17ab4d1189d54d2d1879611dd63d4129931ca01b.
Revert "mm, oom: cleanup pagefault oom handler"

This reverts commit 138131d5b38009ee1597dc47a6dfbf9cca0d6c32.
Revert "oom: use N_MEMORY instead N_HIGH_MEMORY"

This reverts commit 245fa77951c25af107924b25d430e892a144cbdf.
Revert "mm, oom: allow exiting threads to have access to memory reserves"

This reverts commit 6267ea92b6d4f44da5debbaa4f74bf4e91fdfef2.
Revert "mm, memcg: move all oom handling to memcontrol.c"

This reverts commit 1124caeb0637cb1f26601a6cfe6796c9e268bd6b.
Revert "mm, oom: reduce dependency on tasklist_lock"

This reverts commit 53b2ea37307a1ce5f384c25517598008e97517de.
Revert "mm, memcg: introduce own oom handler to iterate only over its own threads"

This reverts commit 943b7b1c2e556ad150ac684b3d5944349e249fb9.
Revert "mm, oom: introduce helper function to process threads during scan"

This reverts commit f838e78a9f892894e9bc0595e2a47c9ed317bcbb.
Revert "mm, oom: fix potential killing of thread that is disabled from oom killing"

This reverts commit f341792b8dac3347c3cd8f857434a9be0f47d8a0.
Revert "mm, oom: do not schedule if current has been killed"

This reverts commit 448e51228d8ba4aa240b4c0b80e735f544e33a5a.
Revert "mm, oom: fix and cleanup oom score calculations"

This reverts commit d9ead56ef90143d1285450222cf3e42efc4525e9.
Revert "mm, oom: fix badness score underflow"

This reverts commit 489ef2360e6982d9884b2750d4fefe7b64c8e08c.
Revert "mm, oom: normalize oom scores to oom_score_adj scale only for userspace"

This reverts commit 2fd56dfff3cd0ea1809be8098ad6aeddd567fa14.