linux-kernel - Re: [PATCH 1/2] seqlock: Add a new blocking reader type

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Message-ID: <20130911184038.GD29749@fieldses.org>
Date:	Wed, 11 Sep 2013 14:40:38 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Waiman Long <waiman.long@...com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Chandramouleeswaran, Aswin" <aswin@...com>,
	"Norton, Scott J" <scott.norton@...com>
Subject: Re: [PATCH 1/2] seqlock: Add a new blocking reader type

On Wed, Sep 11, 2013 at 06:26:25PM +0100, Al Viro wrote:
> On Wed, Sep 11, 2013 at 12:33:35PM -0400, Waiman Long wrote:
> 
> > >Folks, any suggestions on better names?  The semantics we are getting is
> > 
> > I will welcome any better name suggestion and will incorporate that
> > in the patch.
> 
> FWIW, the suggestions I've seen so far had been
> 
> seq_exreadlock() [ex for exclusive]
> seq_exclreadlock() [ditto, and IMO fails the "easily read over the phone"
> test - /sekv-excre...ARRGH/]
> seq_prot_readlock() [prot for protected, as in DLM protected read]

Though the DLM protected read doesn't self-conflict either so that's a
poor analogy, my bad.

(Do the users really require that the read be exclusive?)

--b.
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