mm: munlock: batch NR_MLOCK zone state updates
authorVlastimil Babka <vbabka@suse.cz>
Wed, 11 Sep 2013 21:22:30 +0000 (14:22 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Sep 2013 22:58:00 +0000 (15:58 -0700)
commit1ebb7cc6a58321a4b22c4c9097b4651b0ab859d0
treee7742f1bd9a86d9165af70c7a7e773f4e4d85b3a
parent7225522bb429a2f7dae6667e533e2d735b4882d0
mm: munlock: batch NR_MLOCK zone state updates

Depending on previous batch which introduced batched isolation in
munlock_vma_range(), we can batch also the updates of NR_MLOCK page stats.
 After the whole pagevec is processed for page isolation, the stats are
updated only once with the number of successful isolations.  There were
however no measurable perfomance gains.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Jörn Engel <joern@logfs.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Michel Lespinasse <walken@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/mlock.c