Re: [PATCH v5 09/12] mm, dax: replace IS_DAX() with IS_DEVDAX() or IS_FSDAX()

On Thu, Mar 01, 2018 at 07:54:22PM -0800, Dan Williams wrote:

static inline bool vma_is_dax(struct vm_area_struct *vma) {

• return vma->vm_file && IS_DAX(vma->vm_file->f_mapping->host);

• struct inode *inode;
• if (!vma->vm_file)

• return false;
  

• inode = file_inode(vma->vm_file);
• return IS_FSDAX(inode) || IS_DEVDAX(inode);

If you look at the definition of IS_FSDAX and IS_DEVDAX this is going to evaluate into some bullshit code.