On Fri, Sep 09, 2016 at 06:34:38PM +0200, Christoph Hellwig wrote:
> This way we can use this helper for the iomap based DAX implementation
> as well.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
> ---
> fs/dax.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/fs/dax.c b/fs/dax.c
> index 98463bb..84343ce 100644
> --- a/fs/dax.c
> +++ b/fs/dax.c
> @@ -580,14 +580,13 @@ static int dax_load_hole(struct address_space *mapping, void *entry,
> return VM_FAULT_LOCKED;
> }
>
> -static int copy_user_bh(struct page *to, struct inode *inode,
> - struct buffer_head *bh, unsigned long vaddr)
> +static int copy_user_dax(struct block_device *bdev, sector_t sector, size_t size,
> + struct page *to, unsigned long vaddr)
> {
> struct blk_dax_ctl dax = {
> - .sector = to_sector(bh, inode),
> - .size = bh->b_size,
> + .sector = sector,
> + .size = size,
> };
> - struct block_device *bdev = bh->b_bdev;
> void *vto;
>
> if (dax_map_atomic(bdev, &dax) < 0)
> @@ -867,7 +866,8 @@ int dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
> if (vmf->cow_page) {
> struct page *new_page = vmf->cow_page;
> if (buffer_written(&bh))
> - error = copy_user_bh(new_page, inode, &bh, vaddr);
> + error = copy_user_dax(bh.b_bdev, to_sector(&bh, inode),
> + bh.b_size, new_page, vaddr);
> else
> clear_user_highpage(new_page, vaddr);
> if (error)
> --
> 2.1.4
>
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