btrfs: add helper for recording simple quota deltas

[linux-2.6-block.git] / fs / btrfs / qgroup.h

diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index 0441d2ff5a49a25dbc0138a2ce7ee20b331ac9e0..1e0eb04ef96c5bac30f71663a0436ec699f53226 100644 (file)
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -269,6 +269,19 @@ struct btrfs_qgroup {
        struct kobject kobj;
 };
 
+struct btrfs_squota_delta {
+       /* The fstree root this delta counts against. */
+       u64 root;
+       /* The number of bytes in the extent being counted. */
+       u64 num_bytes;
+       /* The number of bytes reserved for this extent. */
+       u64 rsv_bytes;
+       /* Whether we are using or freeing the extent. */
+       bool is_inc;
+       /* Whether the extent is data or metadata. */
+       bool is_data;
+};
+
 static inline u64 btrfs_qgroup_subvolid(u64 qgroupid)
 {
        return (qgroupid & ((1ULL << BTRFS_QGROUP_LEVEL_SHIFT) - 1));
@@ -407,5 +420,7 @@ int btrfs_qgroup_trace_subtree_after_cow(struct btrfs_trans_handle *trans,
                struct btrfs_root *root, struct extent_buffer *eb);
 void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans);
 bool btrfs_check_quota_leak(struct btrfs_fs_info *fs_info);
+int btrfs_record_squota_delta(struct btrfs_fs_info *fs_info,
+                             struct btrfs_squota_delta *delta);
 
 #endif