mm/migrate.c: call detach_page_private to cleanup code

We can cleanup code a little by call detach_page_private here.

[[email protected]: use attach_page_private(), per Dave]
  http://lkml.kernel.org/r/[email protected]
[[email protected]: clear PagePrivate]
Signed-off-by: Guoqing Jiang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Chao Yu <[email protected]>
Cc: Cong Wang <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Eric Biggers <[email protected]>
Cc: Gao Xiang <[email protected]>
Cc: Jaegeuk Kim <[email protected]>
Cc: John Hubbard <[email protected]>
Cc: Joseph Qi <[email protected]>
Cc: Junxiao Bi <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Zi Yan <[email protected]>
Cc: Johannes Thumshirn <[email protected]>
Cc: Miklos Szeredi <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions