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, 3 insertions, 5 deletions

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index d344c36db63f..e2661d1c5c33 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1014,8 +1014,7 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
 
         if (!list_empty(&pagelist)) {
                 err = migrate_pages(&pagelist, new_node_page, dest,
-                                                        false, MIGRATE_SYNC,
-                                                        MR_SYSCALL);
+                                        MIGRATE_SYNC, MR_SYSCALL);
                 if (err)
                         putback_lru_pages(&pagelist);
         }
@@ -1259,9 +1258,8 @@ static long do_mbind(unsigned long start, unsigned long len,
                 if (!list_empty(&pagelist)) {
                         WARN_ON_ONCE(flags & MPOL_MF_LAZY);
                         nr_failed = migrate_pages(&pagelist, new_vma_page,
-                                                (unsigned long)vma,
-                                                false, MIGRATE_SYNC,
-                                                MR_MEMPOLICY_MBIND);
+                                        (unsigned long)vma,
+                                        MIGRATE_SYNC, MR_MEMPOLICY_MBIND);
                         if (nr_failed)
                                 putback_lru_pages(&pagelist);
                 }