linux-kernel - Re: [RFC -v9 0/4] Lock-less list

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Message-ID: <23265.1293084340@localhost>
Date:	Thu, 23 Dec 2010 01:05:40 -0500
From:	Valdis.Kletnieks@...edu
To:	Huang Ying <ying.huang@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Andi Kleen <andi@...stfloor.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [RFC -v9 0/4] Lock-less list

On Thu, 23 Dec 2010 13:43:19 +0800, Huang Ying said:
> Add a lock-less NULL-terminated linked list implementation.  And use
> that in irq_work and replace net/rds/xlist.h.

A quick overview of the code looks mostly sane.  What I don't see is
an explanation of *why* this is being added.  What benefits does it
have over the current code?  Is it faster? Smaller?  Simply getting rid
of near-duplicate versions in rds and irq_work? Something else?



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