mm: migration: cleanup migrate_pages API by matching types for offlining and sync

With the introduction of the boolean sync parameter, the API looks a
little inconsistent as offlining is still an int.  Convert offlining to a
bool for the sake of being tidy.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

5 files changed, 14 insertions, 12 deletions

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index fa31902803fd..e39aeecfe9a2 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -13,10 +13,10 @@ extern void putback_lru_pages(struct list_head *l);
 extern int migrate_page(struct address_space *,
                         struct page *, struct page *);
 extern int migrate_pages(struct list_head *l, new_page_t x,
-                        unsigned long private, int offlining,
+                        unsigned long private, bool offlining,
                         bool sync);
 extern int migrate_huge_pages(struct list_head *l, new_page_t x,
-                        unsigned long private, int offlining,
+                        unsigned long private, bool offlining,
                         bool sync);
 
 extern int fail_migrate_page(struct address_space *,
@@ -35,10 +35,10 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping,
 
 static inline void putback_lru_pages(struct list_head *l) {}
 static inline int migrate_pages(struct list_head *l, new_page_t x,
-                unsigned long private, int offlining,
+                unsigned long private, bool offlining,
                 bool sync) { return -ENOSYS; }
 static inline int migrate_huge_pages(struct list_head *l, new_page_t x,
-                unsigned long private, int offlining,
+                unsigned long private, bool offlining,
                 bool sync) { return -ENOSYS; }
 
 static inline int migrate_prep(void) { return -ENOSYS; }
diff --git a/mm/compaction.c b/mm/compaction.c
index 47fca1069343..e005a30e968c 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -456,7 +456,7 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
 
                 nr_migrate = cc->nr_migratepages;
                 migrate_pages(&cc->migratepages, compaction_alloc,
-                                (unsigned long)cc, 0,
+                                (unsigned long)cc, false,
                                 cc->sync);
                 update_nr_listpages(cc);
                 nr_remaining = cc->nr_migratepages;
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 584fc5588fdd..a2832c092509 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -734,7 +734,7 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
                 }
                 /* this function returns # of failed pages */
                 ret = migrate_pages(&source, hotremove_migrate_alloc, 0,
-                                                                1, true);
+                                                                true, true);
                 if (ret)
                         putback_lru_pages(&source);
         }
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 9db274593086..7ee55af8d79c 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -935,7 +935,8 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
                 return PTR_ERR(vma);
 
         if (!list_empty(&pagelist)) {
-                err = migrate_pages(&pagelist, new_node_page, dest, 0, true);
+                err = migrate_pages(&pagelist, new_node_page, dest,
+                                                                false, true);
                 if (err)
                         putback_lru_pages(&pagelist);
         }
@@ -1155,7 +1156,8 @@ static long do_mbind(unsigned long start, unsigned long len,
 
                 if (!list_empty(&pagelist)) {
                         nr_failed = migrate_pages(&pagelist, new_vma_page,
-                                                (unsigned long)vma, 0, true);
+                                                (unsigned long)vma,
+                                                false, true);
                         if (nr_failed)
                                 putback_lru_pages(&pagelist);
                 }
diff --git a/mm/migrate.c b/mm/migrate.c
index dc47f6c40353..690d0de993af 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -614,7 +614,7 @@ static int move_to_new_page(struct page *newpage, struct page *page,
  * to the newly allocated page in newpage.
  */
 static int unmap_and_move(new_page_t get_new_page, unsigned long private,
-                        struct page *page, int force, int offlining, bool sync)
+                        struct page *page, int force, bool offlining, bool sync)
 {
         int rc = 0;
         int *result = NULL;
@@ -827,7 +827,7 @@ move_newpage:
  */
 static int unmap_and_move_huge_page(new_page_t get_new_page,
                                 unsigned long private, struct page *hpage,
-                                int force, int offlining, bool sync)
+                                int force, bool offlining, bool sync)
 {
         int rc = 0;
         int *result = NULL;
@@ -909,7 +909,7 @@ out:
  * Return: Number of pages not migrated or error code.
  */
 int migrate_pages(struct list_head *from,
-                new_page_t get_new_page, unsigned long private, int offlining,
+                new_page_t get_new_page, unsigned long private, bool offlining,
                 bool sync)
 {
         int retry = 1;
@@ -960,7 +960,7 @@ out:
 }
 
 int migrate_huge_pages(struct list_head *from,
-                new_page_t get_new_page, unsigned long private, int offlining,
+                new_page_t get_new_page, unsigned long private, bool offlining,
                 bool sync)
 {
         int retry = 1;