[PATCH 11/12] swap: move struct swap_extent to swapfile.c

[Christoph Hellwig <hch@lst.de>]

struct swap_extent is only used inside of mm/swapfile.c, so move it
there.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/swap.h | 15 ---------------
 mm/swapfile.c        | 15 +++++++++++++++
 2 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 916889738f08..95237ee065c2 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -178,21 +178,6 @@ struct sysinfo;
 struct writeback_control;
 struct zone;
 
-/*
- * A swap extent maps a range of a swapfile's PAGE_SIZE pages onto a range of
- * disk blocks.  A rbtree of swap extents maps the entire swapfile (Where the
- * term `swapfile' refers to either a blockdevice or an IS_REG file). Apart
- * from setup, they're handled identically.
- *
- * We always assume that blocks are of size PAGE_SIZE.
- */
-struct swap_extent {
-	struct rb_node rb_node;
-	pgoff_t start_page;
-	pgoff_t nr_pages;
-	sector_t start_block;
-};
-
 /*
  * Max bad pages in the new format..
  */
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 26852c2ad36e..c0479533f9ef 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -260,6 +260,21 @@ static int __try_to_reclaim_swap(struct swap_info_struct *si,
 	return ret;
 }
 
+/*
+ * A swap extent maps a range of a swapfile's PAGE_SIZE pages onto a range of
+ * disk blocks.  A rbtree of swap extents maps the entire swapfile (Where the
+ * term `swapfile' refers to either a blockdevice or an IS_REG file). Apart
+ * from setup, they're handled identically.
+ *
+ * We always assume that blocks are of size PAGE_SIZE.
+ */
+struct swap_extent {
+	struct rb_node rb_node;
+	pgoff_t start_page;
+	pgoff_t nr_pages;
+	sector_t start_block;
+};
+
 static inline struct swap_extent *first_se(struct swap_info_struct *sis)
 {
 	struct rb_node *rb = rb_first(&sis->swap_extent_root);
-- 
2.53.0