Btrfs: Introduce global metadata reservation

[cascardo/linux.git] / fs / btrfs / ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 6a706e6..a068665 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1341,8 +1341,10 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
                        ret = -EPERM;
                        goto out;
                }
-               btrfs_defrag_root(root, 0);
-               btrfs_defrag_root(root->fs_info->extent_root, 0);
+               ret = btrfs_defrag_root(root, 0);
+               if (ret)
+                       goto out;
+               ret = btrfs_defrag_root(root->fs_info->extent_root, 0);
                break;
        case S_IFREG:
                if (!(file->f_mode & FMODE_WRITE)) {
@@ -1372,9 +1374,11 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
                        /* the rest are all set to zero by kzalloc */
                        range->len = (u64)-1;
                }
-               btrfs_defrag_file(file, range);
+               ret = btrfs_defrag_file(file, range);
                kfree(range);
                break;
+       default:
+               ret = -EINVAL;
        }
 out:
        mnt_drop_write(file->f_path.mnt);