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Btrfs: btrfs_lookup_dir_item() can return ERR_PTR 

btrfs_lookup_dir_item() can return either ERR_PTRs or null.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Dan Carpenter 2010-05-29 09:47:24 +00:00 committed by Chris Mason
parent 3140c9a34b
commit cf1e99a4e0
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/ioctl.c
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@ -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, "