On 02/27/2017 01:33 PM, Arnd Bergmann wrote:
> The two alternative implementations of dax_iomap_fault have different
> prototypes, and one of them is obviously wrong as seen from this build
> warning:
>
> fs/dax.c: In function 'dax_iomap_fault':
> fs/dax.c:1462:35: error: passing argument 2 of 'dax_iomap_pmd_fault' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
>
> This marks the argument 'const' as in all the related functions.
>
> Fixes: a2d581675d48 ("mm,fs,dax: change ->pmd_fault to ->huge_fault")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Thanks Arnd. I posted the same fix this morning. :)
http://marc.info/?l=linux-mm&m=148821429608976&w=2
> ---
> fs/dax.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/dax.c b/fs/dax.c
> index d5712f42a2e6..85479428518f 100644
> --- a/fs/dax.c
> +++ b/fs/dax.c
> @@ -1436,7 +1436,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf,
> return result;
> }
> #else
> -static int dax_iomap_pmd_fault(struct vm_fault *vmf, struct iomap_ops *ops)
> +static int dax_iomap_pmd_fault(struct vm_fault *vmf, const struct iomap_ops *ops)
> {
> return VM_FAULT_FALLBACK;
> }
>
