#include <linux/refcount.h>
/* these are the possible values of struct btrfs_delayed_ref_node->action */
-#define BTRFS_ADD_DELAYED_REF 1 /* add one backref to the tree */
-#define BTRFS_DROP_DELAYED_REF 2 /* delete one backref from the tree */
-#define BTRFS_ADD_DELAYED_EXTENT 3 /* record a full extent allocation */
-#define BTRFS_UPDATE_DELAYED_HEAD 4 /* not changing ref count on head ref */
+enum btrfs_delayed_ref_action {
+ /* Add one backref to the tree */
+ BTRFS_ADD_DELAYED_REF = 1,
+ /* Delete one backref from the tree */
+ BTRFS_DROP_DELAYED_REF,
+ /* Record a full extent allocation */
+ BTRFS_ADD_DELAYED_EXTENT,
+ /* Not changing ref count on head ref */
+ BTRFS_UPDATE_DELAYED_HEAD,
+} __packed;
struct btrfs_delayed_ref_node {
struct rb_node ref_node;
BTRFS_REF_DATA,
BTRFS_REF_METADATA,
BTRFS_REF_LAST,
-};
+} __packed;
struct btrfs_data_ref {
/* For EXTENT_DATA_REF */
struct btrfs_ref {
enum btrfs_ref_type type;
- int action;
+ enum btrfs_delayed_ref_action action;
/*
* Whether this extent should go through qgroup record.