From: Christoph Lameter <clameter@engr.sgi.com>
To: Pekka J Enberg <penberg@cs.helsinki.fi>Pekka Enberg
<penberg@cs.helsinki.fi>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, wli@holomorphy.com
Subject: Re: [RFC/PATCH] slab: free pages in a batch in drain_freelist
Date: Thu, 22 Feb 2007 15:01:30 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0702221500420.22546@schroedinger.engr.sgi.com> (raw)
On Thu, 22 Feb 2007, Pekka J Enberg wrote:
> As suggested by William, free the actual pages in a batch so that we
> don't keep pounding on l3->list_lock.
This means holding the l3->list_lock for a prolonged time period. The
existing code was done this way in order to make sure that the interrupt
holdoffs are minimal.
There is no pounding. The cacheline with the list_lock is typically held
until the draining is complete. While we drain the freelist we need to be
able to respond to interrupts.
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next reply other threads:[~2007-02-22 23:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-22 23:01 Christoph Lameter [this message]
2007-02-24 4:30 ` [RFC/PATCH] slab: free pages in a batch in drain_freelist William Lee Irwin III
-- strict thread matches above, loose matches on Subject: below --
2007-02-22 12:39 Pekka J Enberg, Pekka Enberg
2007-02-22 21:57 ` Christoph Lameter
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