mm: compaction: make __compact_pgdat() and compact_pgdat() return void
These functions always return 0. Formalise this.
Cc: Jason Liu <r64343@freescale.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index cc7bdde..091d72e 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -23,7 +23,7 @@
extern unsigned long try_to_compact_pages(struct zonelist *zonelist,
int order, gfp_t gfp_mask, nodemask_t *mask,
bool sync, bool *contended);
-extern int compact_pgdat(pg_data_t *pgdat, int order);
+extern void compact_pgdat(pg_data_t *pgdat, int order);
extern void reset_isolation_suitable(pg_data_t *pgdat);
extern unsigned long compaction_suitable(struct zone *zone, int order);
@@ -80,9 +80,8 @@
return COMPACT_CONTINUE;
}
-static inline int compact_pgdat(pg_data_t *pgdat, int order)
+static inline void compact_pgdat(pg_data_t *pgdat, int order)
{
- return COMPACT_CONTINUE;
}
static inline void reset_isolation_suitable(pg_data_t *pgdat)
diff --git a/mm/compaction.c b/mm/compaction.c
index 0d0248d..5d5b0b2 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1085,7 +1085,7 @@
/* Compact all zones within a node */
-static int __compact_pgdat(pg_data_t *pgdat, struct compact_control *cc)
+static void __compact_pgdat(pg_data_t *pgdat, struct compact_control *cc)
{
int zoneid;
struct zone *zone;
@@ -1118,28 +1118,26 @@
VM_BUG_ON(!list_empty(&cc->freepages));
VM_BUG_ON(!list_empty(&cc->migratepages));
}
-
- return 0;
}
-int compact_pgdat(pg_data_t *pgdat, int order)
+void compact_pgdat(pg_data_t *pgdat, int order)
{
struct compact_control cc = {
.order = order,
.sync = false,
};
- return __compact_pgdat(pgdat, &cc);
+ __compact_pgdat(pgdat, &cc);
}
-static int compact_node(int nid)
+static void compact_node(int nid)
{
struct compact_control cc = {
.order = -1,
.sync = true,
};
- return __compact_pgdat(NODE_DATA(nid), &cc);
+ __compact_pgdat(NODE_DATA(nid), &cc);
}
/* Compact all nodes in the system */