Re: 2.6.11-rc1-mm1

[Christoph Hellwig]

On Fri, Jan 14, 2005 at 04:11:38PM -0500, Karim Yaghmour wrote:
> 	Where does this appear in relayfs and what rights do
> 	user-space apps have over it (rwx).

Why would you want anything but read access?

> bufsize, nbufs:
> 	Usually things have to be subdivided in sub-buffers to make
> 	both writing and reading simple. LTT uses this to allow,
> 	among other things, random trace access.

I think random access is overkill.  Keeping the code simple is more
important and user-space can post-process it.

> resize_min, resize_max:
> 	Allow for dynamic resizing of buffer.

Auto-resizing sounds like a really bad idea.

> init_buf, init_buf_size:
> 	Is there an initial buffer containing some data that should
> 	be used to initialize the channel's content. If you're doing
> 	init-time tracing, for example, you need to have a pre-allocated
> 	static buffer that is copied to relayfs once relayfs is mounted.

And why can't you do this from that code?  It just needs an initcall-like
thing that runs after mounting of relayfs.

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