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authorDavid Sterba <dsterba@suse.com>2017-08-28 17:27:08 +0200
committerDavid Sterba <dsterba@suse.com>2017-09-08 16:15:05 +0200
commit37c271b216b73109879cfc9fbe7146ab9b52fa0c (patch)
tree714e000dfb51698d3cba1aad627807d08925a7c3 /transaction.c
parent599f46ade32c4fab19e2191e85aa28fa57790444 (diff)
btrfs-progs: move transaction implementation out of header
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'transaction.c')
-rw-r--r--transaction.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/transaction.c b/transaction.c
new file mode 100644
index 0000000..b928001
--- /dev/null
+++ b/transaction.c
@@ -0,0 +1,49 @@
+/*
+ * 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.
+ */
+
+#include "kerncompat.h"
+#include "transaction.h"
+
+#include "messages.h"
+
+struct btrfs_trans_handle* btrfs_start_transaction(struct btrfs_root *root,
+ int num_blocks)
+{
+ struct btrfs_fs_info *fs_info = root->fs_info;
+ struct btrfs_trans_handle *h = kzalloc(sizeof(*h), GFP_NOFS);
+
+ if (!h)
+ return ERR_PTR(-ENOMEM);
+ if (root->commit_root) {
+ error("commit_root aleady set when starting transaction");
+ kfree(h);
+ return ERR_PTR(-EINVAL);
+ }
+ if (fs_info->running_transaction) {
+ error("attempt to start transaction over already running one");
+ kfree(h);
+ return ERR_PTR(-EINVAL);
+ }
+ fs_info->running_transaction = h;
+ fs_info->generation++;
+ h->transid = fs_info->generation;
+ h->blocks_reserved = num_blocks;
+ root->last_trans = h->transid;
+ root->commit_root = root->node;
+ extent_buffer_get(root->node);
+
+ return h;
+}