Eliminate the pmd_walker struct in the page walker.

Eliminate the pmd_walker struct in the page walker.

This slightly simplifies things for the next few cleanups.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/proc/task_mmu.c |   47 ++++++++++++++++++-------------------------
 1 file changed, 20 insertions(+), 27 deletions(-)