linux-kernel - Re: [PATCH 20/26 v5] seq_buf: Add seq_buf_can

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Date:	Mon, 17 Nov 2014 22:00:00 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Joe Perches <joe@...ches.com>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Kosina <jkosina@...e.cz>, Petr Mladek <pmladek@...e.cz>
Subject: Re: [PATCH 20/26 v5] seq_buf: Add seq_buf_can_fit() helper function

On Mon, 17 Nov 2014 18:50:52 -0800
Joe Perches <joe@...ches.com> wrote:

> On Mon, 2014-11-17 at 21:37 -0500, Steven Rostedt wrote:
> > On Mon, 17 Nov 2014 17:48:37 -0800
> > Joe Perches <joe@...ches.com> wrote:
> > > On Mon, 2014-11-17 at 20:24 -0500, Steven Rostedt wrote:
> > > > On Mon, 17 Nov 2014 17:07:58 -0800
> > > > Joe Perches <joe@...ches.com> wrote:
> > > > > > Look at the next patch.
> > > > > I don't have it and you are not cc'ing me.
> > > > It's on LKML.
> > > 
> > > And?  There's no convenient way to retrieve it.
> > 
> > You're not subscribed?
> 
> I am subscribed and I delete stuff, don't you?

Nope, I keep all LKML messages. I have archives since 2005.

> 
> > > > Um, that may be the case for seq_file, but it is not the case for
> > > > trace_seq. seq_buf is influenced by seq_file because I have a patch to
> > > > make seq_file use it, but it's also the guts of trace_seq that has some
> > > > different requirements. And it's also not the case with the users of
> > > > seq_buf in the last patch.
> > > 
> > > I think your patch subject description needs expanding.
> > > It says seq_buf, nothing about trace.
> > 
> > It doesn't need to. This helps out the code. seq_buf has nothing to do
> > with seq_file (yet).
> 
> No, I don't think it does help seq_buf.  It only helps trace.

What are you talking about? seq_buf did not exist until this patch set.

> 
> btw:
> 
> I think you should cc Al Viro on the entire patch set.
> 

Why? Currently this is only tracing code. There's nothing in here that
has anything to do with VFS.

When I post patches to convert seq_file to use seq_buf, then I'll Cc Al.

-- Steve

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