It's not used externally. Remove it in compaction.h.
Signed-off-by: Joonsoo Kim <iamjoonsoo....@lge.com>
---
include/linux/compaction.h | 1 -
mm/compaction.c | 2 +-
2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index 4cd4ddf..359b07a 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -46,7 +46,6 @@ extern void reset_isolation_suitable(pg_data_t *pgdat);
extern unsigned long compaction_suitable(struct zone *zone, int order,
int alloc_flags, int classzone_idx);
-extern void defer_compaction(struct zone *zone, int order);
extern bool compaction_deferred(struct zone *zone, int order);
extern void compaction_defer_reset(struct zone *zone, int order,
bool alloc_success);
diff --git a/mm/compaction.c b/mm/compaction.c
index 564047c..f144494 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -124,7 +124,7 @@ static struct page *pageblock_pfn_to_page(unsigned long
start_pfn,
* allocation success. 1 << compact_defer_limit compactions are skipped up
* to a limit of 1 << COMPACT_MAX_DEFER_SHIFT
*/
-void defer_compaction(struct zone *zone, int order)
+static void defer_compaction(struct zone *zone, int order)
{
zone->compact_considered = 0;
zone->compact_defer_shift++;
--
1.9.1
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