btrfs: fix return value check of btrfs_start_transaction()

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

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 12dabe28cf5438c44c9f16ca27b746040dd26d9d..02d224e8c83f8a5b9d0a5553e2ea54ff6a478d59 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -907,6 +907,10 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root,
 
        if (new_size > old_size) {
                trans = btrfs_start_transaction(root, 0);
+               if (IS_ERR(trans)) {
+                       ret = PTR_ERR(trans);
+                       goto out_unlock;
+               }
                ret = btrfs_grow_device(trans, device, new_size);
                btrfs_commit_transaction(trans, root);
        } else {
@@ -2141,9 +2145,9 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp)
        path->leave_spinning = 1;
 
        trans = btrfs_start_transaction(root, 1);
-       if (!trans) {
+       if (IS_ERR(trans)) {
                btrfs_free_path(path);
-               return -ENOMEM;
+               return PTR_ERR(trans);
        }
 
        dir_id = btrfs_super_root_dir(&root->fs_info->super_copy);
@@ -2337,6 +2341,8 @@ static noinline long btrfs_ioctl_start_sync(struct file *file, void __user *argp
        u64 transid;
 
        trans = btrfs_start_transaction(root, 0);
+       if (IS_ERR(trans))
+               return PTR_ERR(trans);
        transid = trans->transid;
        btrfs_commit_transaction_async(trans, root, 0);