mm: remove offlining arg to migrate_pages

No functional change, but the only purpose of the offlining argument to
migrate_pages() etc, was to ensure that __unmap_and_move() could migrate a
KSM page for memory hotremove (which took ksm_thread_mutex) but not for
other callers.  Now all cases are safe, remove the arg.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Petr Holasek <pholasek@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Izik Eidus <izik.eidus@ravellosystems.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 445718b328b6..64c83a8c3220 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6084,10 +6084,8 @@ static int __alloc_contig_migrate_range(struct compact_control *cc,
                                                         &cc->migratepages);
                 cc->nr_migratepages -= nr_reclaimed;
 
-                ret = migrate_pages(&cc->migratepages,
-                                    alloc_migrate_target,
-                                    0, false, MIGRATE_SYNC,
-                                    MR_CMA);
+                ret = migrate_pages(&cc->migratepages, alloc_migrate_target,
+                                    0, MIGRATE_SYNC, MR_CMA);
         }
         if (ret < 0) {
                 putback_movable_pages(&cc->migratepages);