btrfs_create, btrfs_write_super, btrfs_sync_fs
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 8dc1c17..4903b47 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -25,7 +25,7 @@
init_waitqueue_head(&cur_trans->writer_wait);
init_waitqueue_head(&cur_trans->commit_wait);
cur_trans->in_commit = 0;
- cur_trans->use_count = 0;
+ cur_trans->use_count = 1;
cur_trans->commit_done = 0;
}
cur_trans->num_writers++;
@@ -56,7 +56,7 @@
struct btrfs_transaction *cur_trans;
mutex_lock(&root->fs_info->trans_mutex);
cur_trans = root->fs_info->running_transaction;
- WARN_ON(cur_trans->num_writers <= 1);
+ WARN_ON(cur_trans->num_writers < 1);
if (waitqueue_active(&cur_trans->writer_wait))
wake_up(&cur_trans->writer_wait);
cur_trans->num_writers--;
@@ -155,10 +155,13 @@
cur_trans = root->fs_info->running_transaction;
root->fs_info->running_transaction = NULL;
- mutex_unlock(&root->fs_info->trans_mutex);
- memcpy(&snap_key, &root->root_key, sizeof(snap_key));
- root->root_key.offset++;
+ if (root->node != root->commit_root) {
+ memcpy(&snap_key, &root->root_key, sizeof(snap_key));
+ root->root_key.offset++;
+ }
+
+ mutex_unlock(&root->fs_info->trans_mutex);
if (btrfs_root_blocknr(&root->root_item) != root->node->b_blocknr) {
btrfs_set_root_blocknr(&root->root_item, root->node->b_blocknr);