tree 8f163687833fb5e1fa84f72e2e72e1ab83aca91e
parent 25ef0e50cca790370ad7838e3ad74db6a6a2d829
author Johannes Weiner <hannes@cmpxchg.org> 1274736731 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1274800018 -0700

mincore: do nested page table walks

Do page table walks with the well-known nested loops we use in several
other places already.

This avoids doing full page table walks after every pte range and also
allows to handle unmapped areas bigger than one pte range in one go.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>