Changing default root filesystem to ext4

Arnd Bergmann arnd at
Tue Sep 27 15:10:20 UTC 2011

On Monday 26 September 2011, Robert Schwebel wrote:
> On Thu, Aug 18, 2011 at 02:28:07PM +0200, Arnd Bergmann wrote:
> > ext4 has optimizations for flash media in it and btrfs is better by
> > design.
> Do you have a pointer to more info about what kind of optimizations for
> flash media ext4 has? We tried to find something, but didn't so far.

No, sorry. I think the block allocation work rather differently, and
the move from block pointers to extents should also help, but I don't
know how much of that was done specifically for flash, or what other
optimizations are there.


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