Re: [PATCH v2 4/4] hugetlb: Do early cow when page pinned on src mm

[Gal Pressman]

On 05/02/2021 17:51, Peter Xu wrote:
> On Fri, Feb 05, 2021 at 02:58:33PM +0000, Zhang, Wei wrote:
>> Hi Peter,
> 
> Hi, Wei,
> 
>>
>> Gal and I worked together. We tested the patch v2 and can confirm it is working as intended.
>>
>> Thank you very much for your quick response!
> 
> My thanks too on the quick testing!  Sorry that I'll need to post v3; please
> feel free to hold off the testing until I got some r-bs with the new version.

BTW, it might already be fixed in v3, but I encountered a compilation warning
with this series:

mm/memory.c: In function ‘copy_present_page’:
mm/memory.c:800:20: warning: unused variable ‘src_mm’ [-Wunused-variable]
  struct mm_struct *src_mm = src_vma->vm_mm;
                    ^~~~~~