commit 7ea394f1192bee1af67ea4762c88ef4b7b0487a8
author Yan Zheng <zheng.yan@oracle.com> Tue Aug 05 13:05:02 2008 -0400
committer Chris Mason <chris.mason@oracle.com> Thu Sep 25 11:04:06 2008 -0400
tree e2c593d054d802bc71e86508a5b7523ff80cc1ea
parent 00e4e6b33a0f78aab4b788d6d31c884fd8bf88da

Btrfs: Fix nodatacow for the new data=ordered mode

Signed-off-by: Chris Mason <chris.mason@oracle.com>

fs/btrfs/transaction.c

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index ebf5362..9d3d08e 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -438,6 +438,7 @@
 
 				free_extent_buffer(root->commit_root);
 				root->commit_root = NULL;
+				root->dirty_root = NULL;
 
 				spin_lock(&root->list_lock);
 				list_del_init(&dirty->root->dead_list);
@@ -461,6 +462,7 @@
 			       sizeof(struct btrfs_disk_key));
 			root->root_item.drop_level = 0;
 			root->commit_root = NULL;
+			root->dirty_root = NULL;
 			root->root_key.offset = root->fs_info->generation;
 			btrfs_set_root_bytenr(&root->root_item,
 					      root->node->start);
@@ -762,7 +764,11 @@
 	}
 
 	do {
+		int snap_pending = 0;
 		joined = cur_trans->num_joined;
+		if (!list_empty(&trans->transaction->pending_snapshots))
+			snap_pending = 1;
+
 		WARN_ON(cur_trans != trans->transaction);
 		prepare_to_wait(&cur_trans->writer_wait, &wait,
 				TASK_UNINTERRUPTIBLE);
@@ -774,6 +780,11 @@
 
 		mutex_unlock(&root->fs_info->trans_mutex);
 
+		if (snap_pending) {
+			ret = btrfs_wait_ordered_extents(root, 1);
+			BUG_ON(ret);
+		}
+
 		schedule_timeout(timeout);
 
 		mutex_lock(&root->fs_info->trans_mutex);