thp: scale nr_rotated to balance memory pressure
Make sure we scale up nr_rotated when we encounter a referenced
transparent huge page. This ensures pageout scanning balance is not
distorted when there are huge pages on the LRU.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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