No free space left for GC

[David Woodhouse]

tglx at linutronix.de said:
>  The new decision function for gc and reserve_space takes only those
> blocks into account, which are on the dirty and very dirty list. The
> dirty space in the clean_list is ignored. This is neccecary to avoid
> endless GC loops. 

> Any suggestions ?

<IRC conversation repeated, for the benefit of the peanut gallery>

Nice work, thanks. If this fixes the problem, as I believe it does, please
don't calculate the dirty size in thread_should_wake() -- use c->dirty_size 
and just don't count the wasted space in the end of blocks on the 
clean_list in that; add something like 'wasted_size' to keep track of that
instead.

And read README.Locking again. It's rare that I actually write sensible 
documentation -- make the most of it :)

--
dwmw2