Btrfs: Add run time btree defrag, and an ioctl to force btree defrag

[firefly-linux-kernel-4.4.55.git] / fs / btrfs / transaction.h

diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index 0b08208be85358a468f178c3fd8cd0d7cbbd5dda..8b2714e65562985ee64f01fb11c11e5e4eb8ea51 100644 (file)
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -1,3 +1,21 @@
+/*
+ * Copyright (C) 2007 Oracle.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
 #ifndef __TRANSACTION__
 #define __TRANSACTION__
 #include "btrfs_inode.h"
@@ -8,7 +26,6 @@ struct btrfs_transaction {
        int in_commit;
        int use_count;
        int commit_done;
-       int magic;
        struct list_head list;
        struct radix_tree_root dirty_pages;
        unsigned long start_time;
@@ -17,13 +34,11 @@ struct btrfs_transaction {
 };
 
 struct btrfs_trans_handle {
-       int magic;
        u64 transid;
        unsigned long blocks_reserved;
        unsigned long blocks_used;
        struct btrfs_transaction *transaction;
        struct btrfs_block_group_cache *block_group;
-       int magic2;
 };
 
 
@@ -54,5 +69,7 @@ void btrfs_transaction_flush_work(struct btrfs_root *root);
 void btrfs_transaction_queue_work(struct btrfs_root *root, int delay);
 void btrfs_init_transaction_sys(void);
 void btrfs_exit_transaction_sys(void);
+int btrfs_add_dead_root(struct btrfs_root *root, struct list_head *dead_list);
+int btrfs_defrag_dirty_roots(struct btrfs_fs_info *info);
 
 #endif