Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  btrfs: fix oops when doing space balance
  Btrfs: don't panic if we get an error while balancing V2
  btrfs: add missing options displayed in mount output

1 files changed, 7 insertions, 5 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d340f63d8f07..3601f0aebddf 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2678,12 +2678,14 @@ noinline int btrfs_update_inode(struct btrfs_trans_handle *trans,
         int ret;
 
         /*
-         * If root is tree root, it means this inode is used to
-         * store free space information. And these inodes are updated
-         * when committing the transaction, so they needn't delaye to
-         * be updated, or deadlock will occured.
+         * If the inode is a free space inode, we can deadlock during commit
+         * if we put it into the delayed code.
+         *
+         * The data relocation inode should also be directly updated
+         * without delay
          */
-        if (!is_free_space_inode(root, inode)) {
+        if (!is_free_space_inode(root, inode)
+            && root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID) {
                 ret = btrfs_delayed_update_inode(trans, root, inode);
                 if (!ret)
                         btrfs_set_inode_last_trans(trans, inode);