Andrew Morton writes:
 > Nikita Danilov <nikita@clusterfs.com> wrote:
 > >
 > > +#define pagevec_for_each_page(_v, _i, _p, _z)				\
 > >  +for (_i = 0, _z = NULL;							\
 > >  +     ((_i) < pagevec_count(_v) && (__guardloop(_v, _i, _p, _z), 1)) ||	\
 > >  +     (__postloop(_v, _i, _p, _z), 0);					\
 > >  +     (_i)++)
 > 
 > Sorry, this looks more like a dirtyup to me ;)

Don't tell me you are not great fan on comma operator abuse. :)

Anyway, idea is that by hiding complexity it loop macro, we get rid of a
maze of pvec-loops in swap.c all alike.

Attached is next, more typeful variant. Compilebootentested.

Nikita.