diff options
Diffstat (limited to 'drivers/dax/device.c')
| -rw-r--r-- | drivers/dax/device.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/dax/device.c b/drivers/dax/device.c index 6fd46083e629..948806e57cee 100644 --- a/drivers/dax/device.c +++ b/drivers/dax/device.c @@ -392,7 +392,8 @@ static vm_fault_t dev_dax_huge_fault(struct vm_fault *vmf, { struct file *filp = vmf->vma->vm_file; unsigned long fault_size; - int rc, id; + vm_fault_t rc = VM_FAULT_SIGBUS; + int id; pfn_t pfn; struct dev_dax *dev_dax = filp->private_data; @@ -534,6 +535,11 @@ static unsigned long dax_get_unmapped_area(struct file *filp, return current->mm->get_unmapped_area(filp, addr, len, pgoff, flags); } +static const struct address_space_operations dev_dax_aops = { + .set_page_dirty = noop_set_page_dirty, + .invalidatepage = noop_invalidatepage, +}; + static int dax_open(struct inode *inode, struct file *filp) { struct dax_device *dax_dev = inode_dax(inode); @@ -543,6 +549,7 @@ static int dax_open(struct inode *inode, struct file *filp) dev_dbg(&dev_dax->dev, "trace\n"); inode->i_mapping = __dax_inode->i_mapping; inode->i_mapping->host = __dax_inode; + inode->i_mapping->a_ops = &dev_dax_aops; filp->f_mapping = inode->i_mapping; filp->f_wb_err = filemap_sample_wb_err(filp->f_mapping); filp->private_data = dev_dax; |