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Date: Fri, 18 Oct 2002 15:51:36 -0700 (PDT)
From: Linus Torvalds <torvalds@transmeta.com>
To: Davide Libenzi <davidel@xmailserver.org>
cc: Hanna Linder <hannal@us.ibm.com>, Benjamin LaHaise <bcrl@redhat.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
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Subject: Re: [PATCH] sys_epoll system call interface to /dev/epoll
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On Fri, 18 Oct 2002, Davide Libenzi wrote:
> 
> Linus, yesterday I was sugesting Hanna to use most of the existing code
> and to make :
> 
> int sys_epoll_create(int maxfds);
> 
> to actually return an fd. Basically during this function call the code
> allocates a file*, initialize it, allocates a free fd, maps the file* to
> the fd, creates the vma* for the shared events area between the kernel and
> user space, maps allocated kernel pages to the vma*, install the vma* and
> returns the fd.

But that's what her patch infrastructure seems to do. It's not just
epoll_create(), it's all the other ioctl's too (unlink, remove etc). One
queston is whether there is one epoll system call (that multiplexes, like
in Hanna's patch) or many. I personally don't like multiplexing system
calls - the system call number _is_ a multiplexor, I don't see the point 
of having multiple levels.

		Linus

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