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[Kernel] TRIM: Speed up CyanogenMod on the Galaxy S2 AT&T i777

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Lanchon
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Default [Kernel] TRIM: Speed up CyanogenMod on the Galaxy S2 AT&T i777

Brickbug Aftermath: Speeding up CyanogenMod on the Galaxy S2 i9100, S2 AT&T i777, S2 Epic 4G Touch d710 and Note n7000

this project restores TRIM capability to CyanogenMod kernels for the Galaxy S2 family of 4210-based devices: i9100, i777, d710 and n7000. TRIM is needed to avoid "aging" of the state of the eMMC, the internal flash storage, that eventually slows the device to a crawl. TRIM functionality is built into android 4.3 and later. however, due to historical and safety concerns, TRIM capability was removed from the CM kernels for these devices (and from most if not all other AOSP-based kernels).

STOP!!! DRAGONS AHEAD!!!

in theory there could be risk of hard-bricking your device forever.

1) READ THIS POST IN FULL.
2) answer this poll (view results).
3) discuss your i777 experience below in this thread.


Downloads

for the supported devices, you will find kernels for CyanogenMod releases and M snapshots here. note that for some supported devices, no releases or M snapshots are currently being produced. for those devices i can produce kernels based on known 'stable' nightlies if users ask.

XDA:DevDB Information
BrickbugAftermath-i777, Kernel for the AT&T Samsung Galaxy S II SGH-I777

Contributors
Lanchon
Kernel Special Features: CyanogenMod kernel with TRIM support

Version Information
Status: Beta

Created 2014-09-13
Last Updated 2014-09-13
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Lanchon
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Lanchon
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(Last edited by Lanchon; 15th September 2014 at 06:36 PM.)
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added support for the last official nightly:
cm-10.2-20140330-NIGHTLY-i777

also removed "discard" mount option from /data partition.

NOTE: this is the only CM 10.2 kernel i published. it is untested, so please comment of you try it.
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Lanchon
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UPDATE: new CM 10.1.3 kernels that make /preload writable and mount /cache, /data and /preload with the discard option.
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