Thus spoke Adam Carter (adamcart...@gmail.com):
> >
> > Or is it possible to turn off journaling for one partition under ext4?
> >
> 
> My intuition is that the long term damage due to the journal would be far
> less than the damage due to the loss of effective wear levelling that would
> result from not being able to TRIM. Just intuition tho. Let me know if i'm
> misunderstanding something.


Why not just disable journaling on those partitions altogether?

# Delete has_journal option
tune2fs -O ^has_journal <your_boot_partition>

# Issue required fsck
e2fsck -f <your_boot_partition>

# Check fs options
dumpe2fs <your_boot_partition> | less

-- 
malloc1337

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