[PATCH RFC 17/39] btrfs: Move backref_cache_init() to backref.c

[Qu Wenruo <wqu@xxxxxxxx>]

Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
 fs/btrfs/backref.c    | 16 ++++++++++++++++
 fs/btrfs/backref.h    |  2 ++
 fs/btrfs/relocation.c | 16 ----------------
 3 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 45cd8d998e40..2f1a60760342 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -2468,3 +2468,19 @@ int btrfs_backref_iter_next(struct btrfs_backref_iter *iter)
 						path->slots[0]);
 	return 0;
 }
+
+void backref_cache_init(struct btrfs_fs_info *fs_info,
+			struct backref_cache *cache, int is_reloc)
+{
+	int i;
+	cache->rb_root = RB_ROOT;
+	for (i = 0; i < BTRFS_MAX_LEVEL; i++)
+		INIT_LIST_HEAD(&cache->pending[i]);
+	INIT_LIST_HEAD(&cache->changed);
+	INIT_LIST_HEAD(&cache->detached);
+	INIT_LIST_HEAD(&cache->leaves);
+	INIT_LIST_HEAD(&cache->pending_edge);
+	INIT_LIST_HEAD(&cache->useless_node);
+	cache->fs_info = fs_info;
+	cache->is_reloc = is_reloc;
+}
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h
index f119fc7022ab..7c81fed555d7 100644
--- a/fs/btrfs/backref.h
+++ b/fs/btrfs/backref.h
@@ -269,4 +269,6 @@ struct backref_cache {
 	unsigned int is_reloc;
 };
 
+void backref_cache_init(struct btrfs_fs_info *fs_info,
+			struct backref_cache *cache, int is_reloc);
 #endif
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 41723b0fc512..2e54251b9129 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -185,22 +185,6 @@ static void mapping_tree_init(struct mapping_tree *tree)
 	spin_lock_init(&tree->lock);
 }
 
-static void backref_cache_init(struct btrfs_fs_info *fs_info,
-			       struct backref_cache *cache, int is_reloc)
-{
-	int i;
-	cache->rb_root = RB_ROOT;
-	for (i = 0; i < BTRFS_MAX_LEVEL; i++)
-		INIT_LIST_HEAD(&cache->pending[i]);
-	INIT_LIST_HEAD(&cache->changed);
-	INIT_LIST_HEAD(&cache->detached);
-	INIT_LIST_HEAD(&cache->leaves);
-	INIT_LIST_HEAD(&cache->pending_edge);
-	INIT_LIST_HEAD(&cache->useless_node);
-	cache->fs_info = fs_info;
-	cache->is_reloc = is_reloc;
-}
-
 static void backref_cache_cleanup(struct backref_cache *cache)
 {
 	struct backref_node *node;
-- 
2.25.1