Subject: migrate_pages api bool

From: Mel Gorman <mel@csn.ul.ie>

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: Andrea Arcangeli <aarcange@redhat.com>
---

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -13,10 +13,10 @@ extern void putback_lru_pages(struct lis
 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_mappin
 
 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
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -457,7 +457,7 @@ static int compact_zone(struct zone *zon
 
 		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
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -717,7 +717,7 @@ do_migrate_range(unsigned long start_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
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -935,7 +935,8 @@ static int migrate_to_node(struct mm_str
 		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
 
 		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
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -612,7 +612,7 @@ static int move_to_new_page(struct 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;
@@ -808,7 +808,7 @@ 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;
@@ -890,7 +890,7 @@ 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;
@@ -941,7 +941,7 @@ 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;