linux-kernel - Re: [PATCH v2] char: agp: Change return type to vm_fault

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Date:   Mon, 2 Jul 2018 18:12:29 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Souptick Joarder <jrdr.linux@...il.com>
Cc:     airlied@...ux.ie, Arnd Bergmann <arnd@...db.de>,
        linux-kernel@...r.kernel.org, Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH v2] char: agp: Change return type to vm_fault_t

On Mon, Jul 02, 2018 at 09:33:19PM +0530, Souptick Joarder wrote:
> On Mon, Jun 18, 2018 at 5:07 PM, Souptick Joarder <jrdr.linux@...il.com> wrote:
> > On Thu, May 31, 2018 at 10:38 AM, Souptick Joarder <jrdr.linux@...il.com> wrote:
> >> On Mon, May 21, 2018 at 11:47 PM, Souptick Joarder <jrdr.linux@...il.com> wrote:
> >>> Use new return type vm_fault_t for fault handler. For now,
> >>> this is just documenting that the function returns a
> >>> VM_FAULT value rather than an errno. Once all instances are
> >>> converted, vm_fault_t will become a distinct type.
> >>>
> >>> Ref-> commit 1c8f422059ae ("mm: change return type to
> >>> vm_fault_t") was added in 4.17-rc1 to introduce the new
> >>> typedef vm_fault_t. Currently we are making change to all
> >>> drivers to return vm_fault_t for page fault handlers. As
> >>> part of that char/agp driver is also getting changed to
> >>> return vm_fault_t type from fault handler.
> >>>
> >>> Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
> >>> Reviewed-by: Matthew Wilcox <mawilcox@...rosoft.com>
> >>> ---
> >>>  drivers/char/agp/alpha-agp.c | 2 +-
> >>>  1 file changed, 1 insertion(+), 1 deletion(-)
> >>>
> >>> diff --git a/drivers/char/agp/alpha-agp.c b/drivers/char/agp/alpha-agp.c
> >>> index 53fe633..c9bf2c2 100644
> >>> --- a/drivers/char/agp/alpha-agp.c
> >>> +++ b/drivers/char/agp/alpha-agp.c
> >>> @@ -11,7 +11,7 @@
> >>>
> >>>  #include "agp.h"
> >>>
> >>> -static int alpha_core_agp_vm_fault(struct vm_fault *vmf)
> >>> +static vm_fault_t alpha_core_agp_vm_fault(struct vm_fault *vmf)
> >>>  {
> >>>         alpha_agp_info *agp = agp_bridge->dev_private_data;
> >>>         dma_addr_t dma_addr;
> >>> --
> >>> 1.9.1
> >>>
> >>
> >> Any comment for this patch ?
> >
> > Any further comment on this patch ?
> 
> Greg, Can we get this patch in queue for 4.19 ?

I am not the agp maintainer, am I?  That would be David...

thanks,

greg k-h