[PATCH 4/4] btrfs: move btrfs_unlock_up_safe to other locking functions

[David Sterba <dsterba@suse.com>]

The function belongs to the family of locking functions, so move it
there. The 'noinline' keyword is dropped as it's now an exported
function that does not need it.

Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/ctree.c         | 26 --------------------------
 fs/btrfs/ctree.h         |  1 -
 fs/btrfs/delayed-inode.c |  1 +
 fs/btrfs/locking.c       | 26 ++++++++++++++++++++++++++
 fs/btrfs/locking.h       |  1 +
 5 files changed, 28 insertions(+), 27 deletions(-)

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index a55d55e5c913..f2f9cf1149a4 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2353,32 +2353,6 @@ static noinline void unlock_up(struct btrfs_path *path, int level,
 	}
 }
 
-/*
- * This releases any locks held in the path starting at level and
- * going all the way up to the root.
- *
- * btrfs_search_slot will keep the lock held on higher nodes in a few
- * corner cases, such as COW of the block at slot zero in the node.  This
- * ignores those rules, and it should only be called when there are no
- * more updates to be done higher up in the tree.
- */
-noinline void btrfs_unlock_up_safe(struct btrfs_path *path, int level)
-{
-	int i;
-
-	if (path->keep_locks)
-		return;
-
-	for (i = level; i < BTRFS_MAX_LEVEL; i++) {
-		if (!path->nodes[i])
-			continue;
-		if (!path->locks[i])
-			continue;
-		btrfs_tree_unlock_rw(path->nodes[i], path->locks[i]);
-		path->locks[i] = 0;
-	}
-}
-
 /*
  * helper function for btrfs_search_slot.  The goal is to find a block
  * in cache without setting the path to blocking.  If we find the block
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 5e7ff169683c..4bf0433b1179 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2571,7 +2571,6 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
 void btrfs_release_path(struct btrfs_path *p);
 struct btrfs_path *btrfs_alloc_path(void);
 void btrfs_free_path(struct btrfs_path *p);
-void btrfs_set_path_blocking(struct btrfs_path *p);
 void btrfs_unlock_up_safe(struct btrfs_path *p, int level);
 
 int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 49ec3402886a..942cc2a59164 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -12,6 +12,7 @@
 #include "transaction.h"
 #include "ctree.h"
 #include "qgroup.h"
+#include "locking.h"
 
 #define BTRFS_DELAYED_WRITEBACK		512
 #define BTRFS_DELAYED_BACKGROUND	128
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c
index f58606887859..93146b495276 100644
--- a/fs/btrfs/locking.c
+++ b/fs/btrfs/locking.c
@@ -342,3 +342,29 @@ void btrfs_set_path_blocking(struct btrfs_path *p)
 		}
 	}
 }
+
+/*
+ * This releases any locks held in the path starting at level and going all the
+ * way up to the root.
+ *
+ * btrfs_search_slot will keep the lock held on higher nodes in a few corner
+ * cases, such as COW of the block at slot zero in the node.  This ignores
+ * those rules, and it should only be called when there are no more updates to
+ * be done higher up in the tree.
+ */
+void btrfs_unlock_up_safe(struct btrfs_path *path, int level)
+{
+	int i;
+
+	if (path->keep_locks)
+		return;
+
+	for (i = level; i < BTRFS_MAX_LEVEL; i++) {
+		if (!path->nodes[i])
+			continue;
+		if (!path->locks[i])
+			continue;
+		btrfs_tree_unlock_rw(path->nodes[i], path->locks[i]);
+		path->locks[i] = 0;
+	}
+}
diff --git a/fs/btrfs/locking.h b/fs/btrfs/locking.h
index 98c92222eaf0..21a285883e89 100644
--- a/fs/btrfs/locking.h
+++ b/fs/btrfs/locking.h
@@ -34,6 +34,7 @@ static inline void btrfs_assert_tree_locked(struct extent_buffer *eb) { }
 #endif
 
 void btrfs_set_path_blocking(struct btrfs_path *p);
+void btrfs_unlock_up_safe(struct btrfs_path *path, int level);
 
 static inline void btrfs_tree_unlock_rw(struct extent_buffer *eb, int rw)
 {
-- 
2.23.0