mm: compaction: Abort async compaction if locks are contended or taking too long

[mirror_ubuntu-artful-kernel.git] / include / linux / compaction.h

diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index 51a90b7f2d606a3dcb9bb582cd209add0c429351..ef658147e4e8391eec61aa7559a1452fcffe6a79 100644 (file)
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -22,7 +22,7 @@ extern int sysctl_extfrag_handler(struct ctl_table *table, int write,
 extern int fragmentation_index(struct zone *zone, unsigned int order);
 extern unsigned long try_to_compact_pages(struct zonelist *zonelist,
                        int order, gfp_t gfp_mask, nodemask_t *mask,
-                       bool sync);
+                       bool sync, bool *contended);
 extern int compact_pgdat(pg_data_t *pgdat, int order);
 extern unsigned long compaction_suitable(struct zone *zone, int order);
 
@@ -58,13 +58,13 @@ static inline bool compaction_deferred(struct zone *zone, int order)
        if (++zone->compact_considered > defer_limit)
                zone->compact_considered = defer_limit;
 
-       return zone->compact_considered < (1UL << zone->compact_defer_shift);
+       return zone->compact_considered < defer_limit;
 }
 
 #else
 static inline unsigned long try_to_compact_pages(struct zonelist *zonelist,
                        int order, gfp_t gfp_mask, nodemask_t *nodemask,
-                       bool sync)
+                       bool sync, bool *contended)
 {
        return COMPACT_CONTINUE;
 }
@@ -85,7 +85,7 @@ static inline void defer_compaction(struct zone *zone, int order)
 
 static inline bool compaction_deferred(struct zone *zone, int order)
 {
-       return 1;
+       return true;
 }
 
 #endif /* CONFIG_COMPACTION */