btrfs: use bool type for delayed ref head fields that are used as booleans

There's no point in have several fields defined as 1 bit unsigned int in
struct btrfs_delayed_ref_head, we can instead use a bool type, it makes
the code a bit more readable and it doesn't change the structure size.
So switch them to proper booleans.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/delayed-ref.c

@@ -531,7 +531,7 @@ again:
 				href_node);
 	}
 
-	head->processing = 1;
+	head->processing = true;
 	WARN_ON(delayed_refs->num_heads_ready == 0);
 	delayed_refs->num_heads_ready--;
 	delayed_refs->run_delayed_start = head->bytenr +
@@ -549,7 +549,7 @@ void btrfs_delete_ref_head(struct btrfs_delayed_ref_root *delayed_refs,
 	RB_CLEAR_NODE(&head->href_node);
 	atomic_dec(&delayed_refs->num_entries);
 	delayed_refs->num_heads--;
-	if (head->processing == 0)
+	if (!head->processing)
 		delayed_refs->num_heads_ready--;
 }
 
@@ -697,7 +697,7 @@ static void init_delayed_ref_head(struct btrfs_delayed_ref_head *head_ref,
 				  bool is_system)
 {
 	int count_mod = 1;
-	int must_insert_reserved = 0;
+	bool must_insert_reserved = false;
 
 	/* If reserved is provided, it must be a data extent. */
 	BUG_ON(!is_data && reserved);
@@ -722,9 +722,9 @@ static void init_delayed_ref_head(struct btrfs_delayed_ref_head *head_ref,
 	 * BTRFS_ADD_DELAYED_REF because other special casing is not required.
 	 */
 	if (action == BTRFS_ADD_DELAYED_EXTENT)
-		must_insert_reserved = 1;
+		must_insert_reserved = true;
 	else
-		must_insert_reserved = 0;
+		must_insert_reserved = false;
 
 	refcount_set(&head_ref->refs, 1);
 	head_ref->bytenr = bytenr;
@@ -736,7 +736,7 @@ static void init_delayed_ref_head(struct btrfs_delayed_ref_head *head_ref,
 	head_ref->ref_tree = RB_ROOT_CACHED;
 	INIT_LIST_HEAD(&head_ref->ref_add_list);
 	RB_CLEAR_NODE(&head_ref->href_node);
-	head_ref->processing = 0;
+	head_ref->processing = false;
 	head_ref->total_ref_mod = count_mod;
 	spin_lock_init(&head_ref->lock);
 	mutex_init(&head_ref->mutex);

fs/btrfs/delayed-ref.h

@@ -116,10 +116,10 @@ struct btrfs_delayed_ref_head {
 	 * we need to update the in ram accounting to properly reflect
 	 * the free has happened.
 	 */
-	unsigned int must_insert_reserved:1;
+	bool must_insert_reserved;
-	unsigned int is_data:1;
+	bool is_data;
-	unsigned int is_system:1;
+	bool is_system;
-	unsigned int processing:1;
+	bool processing;
 };
 
 struct btrfs_delayed_tree_ref {

fs/btrfs/extent-tree.c

@@ -1497,7 +1497,7 @@ out:
 static int run_delayed_data_ref(struct btrfs_trans_handle *trans,
 				struct btrfs_delayed_ref_node *node,
 				struct btrfs_delayed_extent_op *extent_op,
-				int insert_reserved)
+				bool insert_reserved)
 {
 	int ret = 0;
 	struct btrfs_delayed_data_ref *ref;
@@ -1647,7 +1647,7 @@ out:
 static int run_delayed_tree_ref(struct btrfs_trans_handle *trans,
 				struct btrfs_delayed_ref_node *node,
 				struct btrfs_delayed_extent_op *extent_op,
-				int insert_reserved)
+				bool insert_reserved)
 {
 	int ret = 0;
 	struct btrfs_delayed_tree_ref *ref;
@@ -1687,7 +1687,7 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans,
 static int run_one_delayed_ref(struct btrfs_trans_handle *trans,
 			       struct btrfs_delayed_ref_node *node,
 			       struct btrfs_delayed_extent_op *extent_op,
-			       int insert_reserved)
+			       bool insert_reserved)
 {
 	int ret = 0;
 
@@ -1745,7 +1745,7 @@ static void unselect_delayed_ref_head(struct btrfs_delayed_ref_root *delayed_ref
 				      struct btrfs_delayed_ref_head *head)
 {
 	spin_lock(&delayed_refs->lock);
-	head->processing = 0;
+	head->processing = false;
 	delayed_refs->num_heads_ready++;
 	spin_unlock(&delayed_refs->lock);
 	btrfs_delayed_ref_unlock(head);
@@ -1897,7 +1897,7 @@ static int btrfs_run_delayed_refs_for_head(struct btrfs_trans_handle *trans,
 	struct btrfs_delayed_ref_root *delayed_refs;
 	struct btrfs_delayed_extent_op *extent_op;
 	struct btrfs_delayed_ref_node *ref;
-	int must_insert_reserved = 0;
+	bool must_insert_reserved;
 	int ret;
 
 	delayed_refs = &trans->transaction->delayed_refs;
@@ -1939,7 +1939,7 @@ static int btrfs_run_delayed_refs_for_head(struct btrfs_trans_handle *trans,
 		 * spin lock.
 		 */
 		must_insert_reserved = locked_ref->must_insert_reserved;
-		locked_ref->must_insert_reserved = 0;
+		locked_ref->must_insert_reserved = false;
 
 		extent_op = locked_ref->extent_op;
 		locked_ref->extent_op = NULL;
@@ -3211,7 +3211,7 @@ static noinline int check_ref_cleanup(struct btrfs_trans_handle *trans,
 		goto out;
 
 	btrfs_delete_ref_head(delayed_refs, head);
-	head->processing = 0;
+	head->processing = false;
 
 	spin_unlock(&head->lock);
 	spin_unlock(&delayed_refs->lock);