Merge Btrfs into fs/btrfs

1 files changed, 104 insertions, 0 deletions

diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
new file mode 100644
index 000000000000..eef2cb7d7e78
--- /dev/null
+++ b/fs/btrfs/transaction.h
@@ -0,0 +1,104 @@
+/*
+ * 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 __BTRFS_TRANSACTION__
+#define __BTRFS_TRANSACTION__
+#include "btrfs_inode.h"
+
+struct btrfs_transaction {
+        u64 transid;
+        unsigned long num_writers;
+        unsigned long num_joined;
+        int in_commit;
+        int use_count;
+        int commit_done;
+        int blocked;
+        struct list_head list;
+        struct extent_io_tree dirty_pages;
+        unsigned long start_time;
+        wait_queue_head_t writer_wait;
+        wait_queue_head_t commit_wait;
+        struct list_head pending_snapshots;
+};
+
+struct btrfs_trans_handle {
+        u64 transid;
+        unsigned long blocks_reserved;
+        unsigned long blocks_used;
+        struct btrfs_transaction *transaction;
+        struct btrfs_block_group_cache *block_group;
+        u64 alloc_exclude_start;
+        u64 alloc_exclude_nr;
+};
+
+struct btrfs_pending_snapshot {
+        struct btrfs_root *root;
+        char *name;
+        struct list_head list;
+};
+
+struct btrfs_dirty_root {
+        struct list_head list;
+        struct btrfs_root *root;
+        struct btrfs_root *latest_root;
+};
+
+static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
+                                               struct inode *inode)
+{
+        trans->block_group = BTRFS_I(inode)->block_group;
+}
+
+static inline void btrfs_update_inode_block_group(struct
+                                                  btrfs_trans_handle *trans,
+                                                  struct inode *inode)
+{
+        BTRFS_I(inode)->block_group = trans->block_group;
+}
+
+static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
+                                              struct inode *inode)
+{
+        BTRFS_I(inode)->last_trans = trans->transaction->transid;
+}
+
+int btrfs_end_transaction(struct btrfs_trans_handle *trans,
+                          struct btrfs_root *root);
+struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
+                                                   int num_blocks);
+struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
+                                                   int num_blocks);
+struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
+                                                   int num_blocks);
+int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
+                                     struct btrfs_root *root);
+int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
+                            struct btrfs_root *root);
+
+int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest);
+int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
+int btrfs_clean_old_snapshots(struct btrfs_root *root);
+int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
+                             struct btrfs_root *root);
+int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
+                                   struct btrfs_root *root);
+void btrfs_throttle(struct btrfs_root *root);
+int btrfs_record_root_in_trans(struct btrfs_root *root);
+int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,
+                                        struct extent_io_tree *dirty_pages);
+#endif