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-rw-r--r--fs/btrfs/delayed-ref.h85
1 files changed, 53 insertions, 32 deletions
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index 3bec2ff..f6fc67d 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -30,9 +30,6 @@ struct btrfs_delayed_ref_node {
/* the starting bytenr of the extent */
u64 bytenr;
- /* the parent our backref will point to */
- u64 parent;
-
/* the size of the extent */
u64 num_bytes;
@@ -50,10 +47,21 @@ struct btrfs_delayed_ref_node {
*/
int ref_mod;
+ unsigned int action:8;
+ unsigned int type:8;
/* is this node still in the rbtree? */
+ unsigned int is_head:1;
unsigned int in_tree:1;
};
+struct btrfs_delayed_extent_op {
+ struct btrfs_disk_key key;
+ u64 flags_to_set;
+ unsigned int update_key:1;
+ unsigned int update_flags:1;
+ unsigned int is_data:1;
+};
+
/*
* the head refs are used to hold a lock on a given extent, which allows us
* to make sure that only one process is running the delayed refs
@@ -71,6 +79,7 @@ struct btrfs_delayed_ref_head {
struct list_head cluster;
+ struct btrfs_delayed_extent_op *extent_op;
/*
* when a new extent is allocated, it is just reserved in memory
* The actual extent isn't inserted into the extent allocation tree
@@ -84,27 +93,26 @@ struct btrfs_delayed_ref_head {
* the free has happened.
*/
unsigned int must_insert_reserved:1;
+ unsigned int is_data:1;
};
-struct btrfs_delayed_ref {
+struct btrfs_delayed_tree_ref {
struct btrfs_delayed_ref_node node;
+ union {
+ u64 root;
+ u64 parent;
+ };
+ int level;
+};
- /* the root objectid our ref will point to */
- u64 root;
-
- /* the generation for the backref */
- u64 generation;
-
- /* owner_objectid of the backref */
- u64 owner_objectid;
-
- /* operation done by this entry in the rbtree */
- u8 action;
-
- /* if pin == 1, when the extent is freed it will be pinned until
- * transaction commit
- */
- unsigned int pin:1;
+struct btrfs_delayed_data_ref {
+ struct btrfs_delayed_ref_node node;
+ union {
+ u64 root;
+ u64 parent;
+ };
+ u64 objectid;
+ u64 offset;
};
struct btrfs_delayed_ref_root {
@@ -143,17 +151,25 @@ static inline void btrfs_put_delayed_ref(struct btrfs_delayed_ref_node *ref)
}
}
-int btrfs_add_delayed_ref(struct btrfs_trans_handle *trans,
- u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root,
- u64 ref_generation, u64 owner_objectid, int action,
- int pin);
+int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle *trans,
+ u64 bytenr, u64 num_bytes, u64 parent,
+ u64 ref_root, int level, int action,
+ struct btrfs_delayed_extent_op *extent_op);
+int btrfs_add_delayed_data_ref(struct btrfs_trans_handle *trans,
+ u64 bytenr, u64 num_bytes,
+ u64 parent, u64 ref_root,
+ u64 owner, u64 offset, int action,
+ struct btrfs_delayed_extent_op *extent_op);
+int btrfs_add_delayed_extent_op(struct btrfs_trans_handle *trans,
+ u64 bytenr, u64 num_bytes,
+ struct btrfs_delayed_extent_op *extent_op);
struct btrfs_delayed_ref_head *
btrfs_find_delayed_ref_head(struct btrfs_trans_handle *trans, u64 bytenr);
int btrfs_delayed_ref_pending(struct btrfs_trans_handle *trans, u64 bytenr);
-int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 bytenr,
- u64 num_bytes, u32 *refs);
+int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 bytenr,
+ u64 num_bytes, u64 *refs, u64 *flags);
int btrfs_update_delayed_ref(struct btrfs_trans_handle *trans,
u64 bytenr, u64 num_bytes, u64 orig_parent,
u64 parent, u64 orig_ref_root, u64 ref_root,
@@ -169,18 +185,24 @@ int btrfs_find_ref_cluster(struct btrfs_trans_handle *trans,
*/
static int btrfs_delayed_ref_is_head(struct btrfs_delayed_ref_node *node)
{
- return node->parent == (u64)-1;
+ return node->is_head;
}
/*
* helper functions to cast a node into its container
*/
-static inline struct btrfs_delayed_ref *
-btrfs_delayed_node_to_ref(struct btrfs_delayed_ref_node *node)
+static inline struct btrfs_delayed_tree_ref *
+btrfs_delayed_node_to_tree_ref(struct btrfs_delayed_ref_node *node)
{
WARN_ON(btrfs_delayed_ref_is_head(node));
- return container_of(node, struct btrfs_delayed_ref, node);
+ return container_of(node, struct btrfs_delayed_tree_ref, node);
+}
+static inline struct btrfs_delayed_data_ref *
+btrfs_delayed_node_to_data_ref(struct btrfs_delayed_ref_node *node)
+{
+ WARN_ON(btrfs_delayed_ref_is_head(node));
+ return container_of(node, struct btrfs_delayed_data_ref, node);
}
static inline struct btrfs_delayed_ref_head *
@@ -188,6 +210,5 @@ btrfs_delayed_node_to_head(struct btrfs_delayed_ref_node *node)
{
WARN_ON(!btrfs_delayed_ref_is_head(node));
return container_of(node, struct btrfs_delayed_ref_head, node);
-
}
#endif