Re: [RFC] [PATCH] cache pollution aware __copy_from_user_ll()

Hiro Yoshioka
2005-08-15T23:34:04Z

On 8/15/05, Arjan van de Ven <arjan@infradead.org> wrote:
> > copy_from_user_nocache() is fine.
> >
> > But I don't know where I can use it. (I'm not so
> > familiar with the linux kernel file system yet.)
>
> I suspect the few cases where it will make the most difference will be
> in the VFS for the write() system call, and the AIO variants thereof.
>
> generic_file_buffered_write() will be a good candidate to try first...

Thanks.

filemap_copy_from_user() calls __copy_from_user_inatomic() calls
__copy_from_user_ll().

I'll look at the code.

Hiro
--
Hiro Yoshioka
mailto:hyoshiok at miraclelinux.com