On Mon 26-02-18 20:20:42, Dan Williams wrote:
> In preparation for fixing the broken definition of S_DAX in the
> CONFIG_FS_DAX=n + CONFIG_DEV_DAX=y case, convert all IS_DAX() usages to
> use explicit tests for the DEVDAX and FSDAX sub-cases of DAX
> functionality.
>
> Cc: Jan Kara <jack@xxxxxxxx>
> Cc: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
> Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx>
> Fixes: dee410792419 ("/dev/dax, core: file operations and dax-mmap")
> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Just one nit below. With that fixed you can add:
Reviewed-by: Jan Kara <jack@xxxxxxx>
> @@ -3208,21 +3208,19 @@ static inline bool io_is_direct(struct file *filp)
>
> 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 = vma->vm_file->f_mapping->host;
When changing this, use file_inode() here as well?
Honza
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR