tree 9f3f0c5a60e7a5bf4bfa9f2bd4c9492db36cecfe
parent e64a782fec684c29a8204c51b3cb554dce588592
author Namhyung Kim <namhyung@gmail.com> 1300836765 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1300841042 -0700

mm: batch-free pcp list if possible

free_pcppages_bulk() frees pages from pcp lists in a round-robin fashion
by keeping batch_free counter.  But it doesn't need to spin if there is
only one non-empty list.  This can be checked by batch_free ==
MIGRATE_PCPTYPES.

[akpm@linux-foundation.org: fix comment]
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>