/*
* ok we haven't committed the transaction yet, lets do a commit
*/
- if (file && file->private_data)
+ if (file->private_data)
btrfs_ioctl_trans_end(file);
trans = btrfs_start_transaction(root, 0);
static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma)
{
- vma->vm_ops = &btrfs_file_vm_ops;
+ struct address_space *mapping = filp->f_mapping;
+
+ if (!mapping->a_ops->readpage)
+ return -ENOEXEC;
+
file_accessed(filp);
+ vma->vm_ops = &btrfs_file_vm_ops;
+ vma->vm_flags |= VM_CAN_NONLINEAR;
+
return 0;
}
const struct file_operations btrfs_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
+ .write = do_sync_write,
.aio_read = generic_file_aio_read,
.splice_read = generic_file_splice_read,
.aio_write = btrfs_file_aio_write,