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-rw-r--r--mm/internal.h24
1 files changed, 18 insertions, 6 deletions
diff --git a/mm/internal.h b/mm/internal.h
index f4a7bb02decf..9eeaf2b95166 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -163,6 +163,7 @@ static inline struct page *pageblock_pfn_to_page(unsigned long start_pfn,
extern int __isolate_free_page(struct page *page, unsigned int order);
extern void memblock_free_pages(struct page *page, unsigned long pfn,
unsigned int order);
+extern void __free_pages_core(struct page *page, unsigned int order);
extern void prep_compound_page(struct page *page, unsigned int order);
extern void post_alloc_hook(struct page *page, unsigned int order,
gfp_t gfp_flags);
@@ -183,14 +184,16 @@ extern int user_min_free_kbytes;
struct compact_control {
struct list_head freepages; /* List of free pages to migrate to */
struct list_head migratepages; /* List of pages being migrated */
+ unsigned int nr_freepages; /* Number of isolated free pages */
+ unsigned int nr_migratepages; /* Number of pages to migrate */
+ unsigned long free_pfn; /* isolate_freepages search base */
+ unsigned long migrate_pfn; /* isolate_migratepages search base */
+ unsigned long fast_start_pfn; /* a pfn to start linear scan from */
struct zone *zone;
- unsigned long nr_freepages; /* Number of isolated free pages */
- unsigned long nr_migratepages; /* Number of pages to migrate */
unsigned long total_migrate_scanned;
unsigned long total_free_scanned;
- unsigned long free_pfn; /* isolate_freepages search base */
- unsigned long migrate_pfn; /* isolate_migratepages search base */
- unsigned long last_migrated_pfn;/* Not yet flushed page being freed */
+ unsigned short fast_search_fail;/* failures to use free list searches */
+ short search_order; /* order to start a fast search at */
const gfp_t gfp_mask; /* gfp mask of a direct compactor */
int order; /* order a direct compactor needs */
int migratetype; /* migratetype of direct compactor */
@@ -203,7 +206,16 @@ struct compact_control {
bool direct_compaction; /* False from kcompactd or /proc/... */
bool whole_zone; /* Whole zone should/has been scanned */
bool contended; /* Signal lock or sched contention */
- bool finishing_block; /* Finishing current pageblock */
+ bool rescan; /* Rescanning the same pageblock */
+};
+
+/*
+ * Used in direct compaction when a page should be taken from the freelists
+ * immediately when one is created during the free path.
+ */
+struct capture_control {
+ struct compact_control *cc;
+ struct page *page;
};
unsigned long