Merge tag 'dm-3.14-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device...

[~andy/linux] / fs / btrfs / delayed-ref.h

diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index a54c9d47918fa81e74c37faacf51e8593ff44895..4ba9b93022ffd4e70e862e67674fdacbfb899e1c 100644 (file)
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -81,7 +81,8 @@ 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;
 
@@ -100,6 +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 {
@@ -118,8 +120,6 @@ struct btrfs_delayed_data_ref {
 };
 
 struct btrfs_delayed_ref_root {
-       struct rb_root root;
-
        /* head ref rbtree */
        struct rb_root href_root;
 
@@ -129,7 +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;
@@ -137,15 +137,6 @@ struct btrfs_delayed_ref_root {
        /* total number of head nodes ready for processing */
        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
@@ -231,9 +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,