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From: Christoph Lameter <>
To: Pekka J Enberg <>,
	Pekka Enberg <>
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: <> (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.

             reply	other threads:[~2007-02-22 23:35 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 ` William Lee Irwin III
  -- strict thread matches above, loose matches on Subject: below --
2007-02-22 12:39 Pekka J Enberg
2007-02-22 21:57 ` Christoph Lameter

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