[patch 8/11] btrfs: btrfs_lookup_dir_item() can return ERR_PTR

[Dan Carpenter]

btrfs_lookup_dir_item() can return either ERR_PTRs or null.

Signed-off-by: Dan Carpenter <erro...@gmail.com>

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 9f9a1d9..4dbaf89 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1845,7 +1845,7 @@ static long btrfs_ioctl_default_subvol(struct file *file, 
void __user *argp)
        dir_id = btrfs_super_root_dir(&root->fs_info->super_copy);
        di = btrfs_lookup_dir_item(trans, root->fs_info->tree_root, path,
                                   dir_id, "default", 7, 1);
-       if (!di) {
+       if (IS_ERR_OR_NULL(di)) {
                btrfs_free_path(path);
                btrfs_end_transaction(trans, root);
                printk(KERN_ERR "Umm, you don't have the default dir item, "
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