Re: [PATCH RFC v3 0/7] epoll: Introduce new syscalls, epoll_ctl_batch and epoll_pwait1

Fam Zheng
2015-02-16T01:03:38Z

On Sun, 02/15 15:00, Jonathan Corbet wrote:
> On Fri, 13 Feb 2015 17:03:56 +0800
> Fam Zheng <famz@redhat.com> wrote:
>
> > SYNOPSIS
> >
> > #include <sys/epoll.h>
> >
> > int epoll_pwait1(int epfd, int flags,
> > struct epoll_event *events,
> > int maxevents,
> > struct epoll_wait_params *params);
>
> Quick, possibly dumb question: might it make sense to also pass in
> sizeof(struct epoll_wait_params)? That way, when somebody wants to add
> another parameter in the future, the kernel can tell which version is in
> use and they won't have to do an epoll_pwait2()?
>

Flags can be used for that, if the change is not radically different.

Fam