Re: [PATCH 05/20] tomoyo_write_control(): get rid of pointless access_ok()

[Tetsuo Handa]

On 2020/05/10 9:57, Linus Torvalds wrote:
> On Sat, May 9, 2020 at 5:51 PM Tetsuo Handa
> <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote:
>>
>> I think that this access_ok() check helps reducing partial writes (either
>> "whole amount was processed" or "not processed at all" unless -ENOMEM).
> 
> No it doesn't.
> 
> "access_ok()" only checks the range being a valid user address range.
> 

I see. Thank you.

Acked-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>