Revert "LMK: Optimize lowmem_shrink."

This reverts commit 79239fc04e2de162ec61f878514ee65d1adf7779.
Revert "SCHEDULER: Autogroup patch group by current user android UID instead of task ID"

This reverts commit 01be983e008ad36b52cc47888d7f79effeccc21f.
Revert "fs: Asynchronous I/O latency Patch"

This reverts commit af2c0c05a14a356e3b8457cc817c0c2e798c9e8b.
Revert "Slub Tweak"

This reverts commit 64ed2b23b76ec2f5e466916e8c3615ebaeaf62ae.
Revert "CHROMIUM: mm: Fix calculation of dirtyable memory"

This reverts commit c7b854c26b4bb33bf84a0c981c61703acf0939f2.