multiple MTD partitions

[Adrian Hunter]

Joel Stanley wrote:
> On Dec 17, 2007 5:55 PM, Ivan Krstić <krstic at solarsail.hcs.harvard.edu> wrote:
> > On Dec 17, 2007, at 1:51 AM, Joel Stanley wrote:
> > > JFFS2 has done an excellent job, at least on my xos, of keeping
> > > filesystem integrity after sudden power-offs.
> >
> > Write-back caching does not adversely affect filesystem *integrity*.
> 
> Okay. Data-loss what what my brain thought, a sentence about integrity
> came out of my fingers.
> 
> > more context-sensitive policy can be implemented by more context-aware
> > elements of the stack.
> 
> That would be cool. But I think there would as many, maybe more, cases
> of batteries being removed, power cords yanked, and generators turning
> off causing shutdowns than low-battery issues.
> 
> Also, a point wad made: the more writes you defer, the more memory is
> used to store them, on an already memory-constrained system.

I think writeback would be triggered when memory is needed, so that
the memory would be made available anyway.

> 
> Not that I don't think UBIFS would be awesome, with an amount of
> tweaking to hit the sweet spot miniamsing memory usage, data-loss, and
> keeping write speed up, etc. Just thinking about the downsides.
> 
> Joel