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-rw-r--r--fs/btrfs/delayed-ref.h26
1 files changed, 11 insertions, 15 deletions
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index 70b962cc177d..4ba9b93022ff 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -81,7 +81,10 @@ struct btrfs_delayed_ref_head {
*/
struct mutex mutex;
- struct list_head cluster;
+ spinlock_t lock;
+ struct rb_root ref_root;
+
+ struct rb_node href_node;
struct btrfs_delayed_extent_op *extent_op;
/*
@@ -98,6 +101,7 @@ struct btrfs_delayed_ref_head {
*/
unsigned int must_insert_reserved:1;
unsigned int is_data:1;
+ unsigned int processing:1;
};
struct btrfs_delayed_tree_ref {
@@ -116,7 +120,8 @@ struct btrfs_delayed_data_ref {
};
struct btrfs_delayed_ref_root {
- struct rb_root root;
+ /* head ref rbtree */
+ struct rb_root href_root;
/* this spin lock protects the rbtree and the entries inside */
spinlock_t lock;
@@ -124,7 +129,7 @@ struct btrfs_delayed_ref_root {
/* how many delayed ref updates we've queued, used by the
* throttling code
*/
- unsigned long num_entries;
+ atomic_t num_entries;
/* total number of head nodes in tree */
unsigned long num_heads;
@@ -133,15 +138,6 @@ struct btrfs_delayed_ref_root {
unsigned long num_heads_ready;
/*
- * bumped when someone is making progress on the delayed
- * refs, so that other procs know they are just adding to
- * contention intead of helping
- */
- atomic_t procs_running_refs;
- atomic_t ref_seq;
- wait_queue_head_t wait;
-
- /*
* set when the tree is flushing before a transaction commit,
* used by the throttling code to decide if new updates need
* to be run right away
@@ -226,9 +222,9 @@ static inline void btrfs_delayed_ref_unlock(struct btrfs_delayed_ref_head *head)
mutex_unlock(&head->mutex);
}
-int btrfs_find_ref_cluster(struct btrfs_trans_handle *trans,
- struct list_head *cluster, u64 search_start);
-void btrfs_release_ref_cluster(struct list_head *cluster);
+
+struct btrfs_delayed_ref_head *
+btrfs_select_ref_head(struct btrfs_trans_handle *trans);
int btrfs_check_delayed_seq(struct btrfs_fs_info *fs_info,
struct btrfs_delayed_ref_root *delayed_refs,