Re: [patch v2] epoll use a single inode ...

Davide Libenzi
2007-03-06T18:10:15Z

On Tue, 6 Mar 2007, H. Peter Anvin wrote:

> Eric Dumazet wrote:
> >
> > For epoll, I suspect this is harmless : Programs dont allocate epolls fd
> > every milli second, but at startup only.
> >
> > For pipes/sockets, using a 64 bits would be problematic, because sprintf()
> > uses a divide for each digit. And a divide is slow. Ten divides are *very*
> > slow.
> >
>
> That's true for *any* sprintf(), though. sprintf() converts all its arguments
> to 64 bits.

Sigh! We *always* do do_div(), even for the more trivial %x case.
Anyway, it does not really matter for the type of dfs will be applied to.

- Davide