mm: compaction: clear PG_migrate_skip based on compaction and reclaim activity

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / compaction.h

diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index ef658147e4e8391eec61aa7559a1452fcffe6a79..6ecb6dc2f3033fc50ba1a8f14eb4b2b12b8ec044 100644 (file)
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -22,8 +22,9 @@ 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 *contended);
+                       bool sync, bool *contended, struct page **page);
 extern int 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);
 
 /* Do not skip compaction more than 64 times */
@@ -61,10 +62,20 @@ static inline bool compaction_deferred(struct zone *zone, int order)
        return zone->compact_considered < defer_limit;
 }
 
+/* Returns true if restarting compaction after many failures */
+static inline bool compaction_restarting(struct zone *zone, int order)
+{
+       if (order < zone->compact_order_failed)
+               return false;
+
+       return zone->compact_defer_shift == COMPACT_MAX_DEFER_SHIFT &&
+               zone->compact_considered >= 1UL << zone->compact_defer_shift;
+}
+
 #else
 static inline unsigned long try_to_compact_pages(struct zonelist *zonelist,
                        int order, gfp_t gfp_mask, nodemask_t *nodemask,
-                       bool sync, bool *contended)
+                       bool sync, bool *contended, struct page **page)
 {
        return COMPACT_CONTINUE;
 }
@@ -74,6 +85,10 @@ static inline int compact_pgdat(pg_data_t *pgdat, int order)
        return COMPACT_CONTINUE;
 }
 
+static inline void reset_isolation_suitable(pg_data_t *pgdat)
+{
+}
+
 static inline unsigned long compaction_suitable(struct zone *zone, int order)
 {
        return COMPACT_SKIPPED;