diff options
| -rw-r--r-- | fs/btrfs/ioctl.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 5342e4a2bb9a..0e524f3eaa9f 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -672,10 +672,16 @@ static noinline int create_subvol(struct inode *dir, btrfs_abort_transaction(trans, ret); goto fail; } + if (!btrfs_grab_fs_root(new_root)) { + ret = -ENOENT; + btrfs_abort_transaction(trans, ret); + goto fail; + } btrfs_record_root_in_trans(trans, new_root); ret = btrfs_create_subvol_root(trans, new_root, root, new_dirid); + btrfs_put_fs_root(new_root); if (ret) { /* We potentially lose an unused inode item here */ btrfs_abort_transaction(trans, ret); |