On 7/20/07, Dave Young <[EMAIL PROTECTED]> 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.
--
Denis Cheng
Linux Application Developer
"One of my most productive days was throwing away 1000 lines of code."
- Ken Thompson.
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