Re: [patch 4/6] mm: merge populate and nopage into fault (fixesnonlinear)

[Miklos Szeredi]

> > 
> > Look in page_mkclean().  Where does it handle non-linear mappings?
> > 
> 
> OK, I'd forgotten about that.  It won't break dirty memory accounting,
> but it'll potentially break dirty memory balancing.
> 
> If we have the wrong page (due to nonlinear), page_check_address() will
> fail and we'll leave the pte dirty.

It won't even get that far, because it only looks at vmas on
mapping->i_mmap, and not on i_mmap_nonlinear.

Miklos
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