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From:   Souptick Joarder <jrdr.linux@gmail.com>
Date:   Fri, 25 May 2018 02:00:33 +0530
Message-ID: <CAFqt6zZcax5H8rfumMCOA0amUC25dB-=EkNHb5rbLBsmK0Z5kQ@mail.gmail.com>
Subject: Re: [PATCH] gpu: drm: drm_vm: Adding new typedef vm_fault_t
To:     daniel.vetter@intel.com, Gustavo Padovan <gustavo@padovan.org>,
        Sean Paul <seanpaul@chromium.org>, airlied@linux.ie
Cc:     dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        Matthew Wilcox <willy@infradead.org>
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On Wed, May 16, 2018 at 10:09 AM, Souptick Joarder <jrdr.linux@gmail.com> wrote:
> On Thu, May 10, 2018 at 7:12 PM, Souptick Joarder <jrdr.linux@gmail.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.
>>
>> commit 1c8f422059ae ("mm: change return type to vm_fault_t")
>>
>> Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
>> Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
>> ---
>>  drivers/gpu/drm/drm_vm.c | 10 +++++-----
>>  1 file changed, 5 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
>> index 2660543..c330104 100644
>> --- a/drivers/gpu/drm/drm_vm.c
>> +++ b/drivers/gpu/drm/drm_vm.c
>> @@ -100,7 +100,7 @@ static pgprot_t drm_dma_prot(uint32_t map_type, struct vm_area_struct *vma)
>>   * map, get the page, increment the use count and return it.
>>   */
>>  #if IS_ENABLED(CONFIG_AGP)
>> -static int drm_vm_fault(struct vm_fault *vmf)
>> +static vm_fault_t drm_vm_fault(struct vm_fault *vmf)
>>  {
>>         struct vm_area_struct *vma = vmf->vma;
>>         struct drm_file *priv = vma->vm_file->private_data;
>> @@ -173,7 +173,7 @@ static int drm_vm_fault(struct vm_fault *vmf)
>>         return VM_FAULT_SIGBUS; /* Disallow mremap */
>>  }
>>  #else
>> -static int drm_vm_fault(struct vm_fault *vmf)
>> +static vm_fault_t drm_vm_fault(struct vm_fault *vmf)
>>  {
>>         return VM_FAULT_SIGBUS;
>>  }
>> @@ -189,7 +189,7 @@ static int drm_vm_fault(struct vm_fault *vmf)
>>   * Get the mapping, find the real physical page to map, get the page, and
>>   * return it.
>>   */
>> -static int drm_vm_shm_fault(struct vm_fault *vmf)
>> +static vm_fault_t drm_vm_shm_fault(struct vm_fault *vmf)
>>  {
>>         struct vm_area_struct *vma = vmf->vma;
>>         struct drm_local_map *map = vma->vm_private_data;
>> @@ -291,7 +291,7 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
>>   *
>>   * Determine the page number from the page offset and get it from drm_device_dma::pagelist.
>>   */
>> -static int drm_vm_dma_fault(struct vm_fault *vmf)
>> +static vm_fault_t drm_vm_dma_fault(struct vm_fault *vmf)
>>  {
>>         struct vm_area_struct *vma = vmf->vma;
>>         struct drm_file *priv = vma->vm_file->private_data;
>> @@ -326,7 +326,7 @@ static int drm_vm_dma_fault(struct vm_fault *vmf)
>>   *
>>   * Determine the map offset from the page offset and get it from drm_sg_mem::pagelist.
>>   */
>> -static int drm_vm_sg_fault(struct vm_fault *vmf)
>> +static vm_fault_t drm_vm_sg_fault(struct vm_fault *vmf)
>>  {
>>         struct vm_area_struct *vma = vmf->vma;
>>         struct drm_local_map *map = vma->vm_private_data;
>> --
>> 1.9.1
>>
>
> Daniel, if no further comment, we would like to get this patch
> in queue for 4.18.

We would like to get this in queue for 4.18.