diff options
| -rw-r--r-- | fs/btrfs/file.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index abcb91867b56..ce0cd29efa9e 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1189,8 +1189,15 @@ static const struct vm_operations_struct btrfs_file_vm_ops = { 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; } |