Uscito r53!!!
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r52 >> r53
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mm: add ultra kernel samepage merging (UKSM) and enable it by default (will save you some 10-30 mb RAM; UKSM is more CPU efficient and has more tuning options than KSM)
move uksm daemon to background tasks (so that timer_slack applies)
disable android ram console (2 mb more RAM)
sioplus: relax sync_read_expire, tighten sync_write_expire
ARM: 7493/1: use generic unaligned.h
OMAP4: do not force (some) workarounds for errata fixed in 4460
mmcblk0: set add_random 0
adjust f2fs ram threshold (/data should get some more than the way smaller /system and /cache)