btrfs: qgroup: Add new function to record old_roots.

[cascardo/linux.git] / fs / btrfs / qgroup.h

diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index 18cc68c..6fe249f 100644 (file)
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -19,6 +19,9 @@
 #ifndef __BTRFS_QGROUP__
 #define __BTRFS_QGROUP__
 
+#include "ulist.h"
+#include "delayed-ref.h"
+
 /*
  * A description of the operations, all of these operations only happen when we
  * are adding the 1st reference for that subvolume in the case of adding space
@@ -58,6 +61,17 @@ struct btrfs_qgroup_operation {
        struct list_head list;
 };
 
+/*
+ * Record a dirty extent, and info qgroup to update quota on it
+ * TODO: Use kmem cache to alloc it.
+ */
+struct btrfs_qgroup_extent_record {
+       struct rb_node node;
+       u64 bytenr;
+       u64 num_bytes;
+       struct ulist *old_roots;
+};
+
 int btrfs_quota_enable(struct btrfs_trans_handle *trans,
                       struct btrfs_fs_info *fs_info);
 int btrfs_quota_disable(struct btrfs_trans_handle *trans,
@@ -70,8 +84,7 @@ int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans,
 int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans,
                              struct btrfs_fs_info *fs_info, u64 src, u64 dst);
 int btrfs_create_qgroup(struct btrfs_trans_handle *trans,
-                       struct btrfs_fs_info *fs_info, u64 qgroupid,
-                       char *name);
+                       struct btrfs_fs_info *fs_info, u64 qgroupid);
 int btrfs_remove_qgroup(struct btrfs_trans_handle *trans,
                              struct btrfs_fs_info *fs_info, u64 qgroupid);
 int btrfs_limit_qgroup(struct btrfs_trans_handle *trans,
@@ -85,6 +98,11 @@ int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans,
                            u64 bytenr, u64 num_bytes,
                            enum btrfs_qgroup_operation_type type,
                            int mod_seq);
+int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans,
+                                        struct btrfs_fs_info *fs_info);
+struct btrfs_qgroup_extent_record
+*btrfs_qgroup_insert_dirty_extent(struct btrfs_delayed_ref_root *delayed_refs,
+                                 struct btrfs_qgroup_extent_record *record);
 int btrfs_delayed_qgroup_accounting(struct btrfs_trans_handle *trans,
                                    struct btrfs_fs_info *fs_info);
 void btrfs_remove_qgroup_operation(struct btrfs_trans_handle *trans,