Update notes for submitted changes

* sched: Fix migration thread runtime bogosity
* PM: devfreq: Add sysfs nodes for devfreq governors
* PM: devfreq: conservative: Return 0 if GPU just started
* PM: devfreq: Always reflect a change of polling interval
* PM: devfreq: Add some conservativeness
* PM: devfreq: Add conservative governor
* PM: devfreq: Fix show available freqs
* PM / devfreq: Fix simple_ondemand crashing
* PM: Introduce suspend state PM_SUSPEND_FREEZE
* mm: slub: Default slub_max_order to 0
* mm: vmscan: If kswapd has been running too long, allow it to sleep
* mm: fix anon vma naming
* mm/page-writeback.c: fix dirty_balance_reserve subtraction from dirtyable memory
* mm, vmalloc: remove useless variable in vmap_block
* mm, vmalloc: use well-defined find_last_bit() func
* AIO: Don't plug the I/O queue in do_io_submit()
* jbd2: optimize jbd2_journal_force_commit
* ext4: speed up truncate/unlink by not using bforget() unless needed
* net: loopback: set default mtu to 64K
* af_unix: speedup /proc/net/unix
* msm: use of swp{b} is deprecated for ARMv6+
* deadline: Allow 0ms deadline latency, increase the read speed
* block: Reserve only one queue tag for sync IO if only 3 tags are available
* readahead: make context readahead more conservative
* writeback: fix race that cause writeback hung
* writeback: Fix occasional slow sync(1)
* writeback: remove nr_pages_dirtied arg from balance_dirty_pages_ratelimited_nr()
* CPU hotplug, writeback: Don't call writeback_set_ratelimit() too often during hotplug
* writeback: increase bdi_min_ratio to 5 in light of the latest writeback commit.
* writeback: fix writeback cache thrashing