Re: [PATCH] fs/fuse/dev.c: use zero_user_page instead

["Dave Young" <hidave.darkstar@gmail.com>]

>On 7/20/07, rae l <crquan@gmail.com> wrote:
> On 7/20/07, Dave Young <hidave.darkstar@gmail.com> wrote:
> > > -       if (page && zeroing && count < PAGE_SIZE) {
> > > -               void *mapaddr = kmap_atomic(page, KM_USER1);
> > > -               memset(mapaddr, 0, PAGE_SIZE);
> > > -               kunmap_atomic(mapaddr, KM_USER1);
> > > -       }
> > > +       if (page && zeroing && count < PAGE_SIZE)
> > > +               zero_user_page(page, 0, PAGE_SIZE, KM_USER1);
> > Why clear all page? IMHO,only count bytes need to be cleared.
> The original one is memset(mapaddr, 0, PAGE_SIZE), namely clear the whole page.
Yes, I have same suspicion with original code.
>
> --
> Denis Cheng
> Linux Application Developer
>
> "One of my most productive days was throwing away 1000 lines of code."
>  - Ken Thompson.
>