Revert "af_unix: speedup /proc/net/unix /proc/net/unix has quadratic behavior, and can hold unix_table_lock for a while if high number of unix sockets are alive. (90 ms for 200k sockets...)"

This reverts commit 75dd3e9366d7f84ba9fbd839d8d9e901c00bd9fb.
revert
Revert "f2fs: data: AIO optimization compatibility fixup"

This reverts commit 5c2998aa4e7926d4eac391e9178d4cf7a4e4a6dc.
Revert "arm: Allow SCHED_HRTICK on ARM"

This reverts commit 614e970108030a1fb59cff60d5a8b8c330e8eef4.
Revert "Optimized SLUB"

This reverts commit 8d1322e8bb52779d4f121b8f88a8540e1204b757.
Revert "nicki: Increase MM heap size for smooth streaming"

This reverts commit f9cf0e2806e8143b67cbb634ec81cea68bd2bc51.
Revert "random: entropy tweaks are all the rage nowadays"

This reverts commit 07ab12ca7a5f2179636b3db3b95434f60356fcfe.
Revert "Asynchronous I/O latency to a solid-state disk greatly increased"

This reverts commit a567ee57f8c662ec6bda25b7faeb72441671337a.
Revert "Optimize apply_slack() for size and speed -- http://lkml.indiana.edu/hypermail/linux/kernel/1201.3/03172.html"

This reverts commit 59ab660b649b3bb731e5245348ab746aa86fbb38.
Revert "Lock initial TCP window size to 64k (Improves network ping and output)"

This reverts commit dc96ce87598feb82251860102cab621528b07ace.
Revert "Add zSwap from Linux 3.11"

This reverts commit 1d86e07f9a6d2d93a80b6c6f29e77a647fd471bf.