linux-kernel - Re: [PATCH] Introduce down

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Message-Id: <200805221856.23824.rusty@rustcorp.com.au>
Date:	Thu, 22 May 2008 18:56:23 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Daniel Walker <dwalker@...sta.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Christoph Hellwig <hch@...radead.org>,
	Matthew Wilcox <matthew@....cx>
Subject: Re: [PATCH] Introduce down_nowait()

On Thursday 22 May 2008 03:04:58 Daniel Walker wrote:
> On Wed, 2008-05-21 at 17:56 +1000, Rusty Russell wrote:
> > Subject: [PATCH] Introduce down_try()
> >
> > I planned on removing the much-disliked down_trylock() (with its
> > backwards return codes) in 2.6.27, but it's creating something of a
> > logjam with other patches in -mm and linux-next.
> >
> > Andrew suggested introducing "down_try" as a wrapper now, to make
> > the transition easier.
>
> I must be missing something critical, but what's the logjam this is
> causing?
>
> Daniel

The patches to change down_trylock to down_try touch a heap of files, which 
are also touched in other people's trees.  If this patch goes upstream, those 
people rewriting that code can use down_try in their rewrite, and I can throw 
mine away.

Cheers,
Rusty.
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