From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: "Christoph Lameter" <clameter@sgi.com>,
"Pekka Enberg" <penberg@cs.helsinki.fi>,
"Linus Torvalds" <torvalds@osdl.org>,
"Daniel Hokka Zakrisson" <daniel@hozac.com>,
linux-kernel@vger.kernel.org,
"Björn Steinbrink" <B.Steinbrink@gmx.de>,
greg@kroah.com, matthew@wil.cx, akpm@osdl.org
Subject: Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions
Date: Tue, 09 May 2006 16:37:18 +1000 [thread overview]
Message-ID: <4460389E.80402@yahoo.com.au> (raw)
In-Reply-To: <44603543.8070205@colorfullife.com>
Manfred Spraul wrote:
> Christoph Lameter wrote:
>
>> virt_to_page is not cheap on NUMA.
>>
>>
>>
> I know. But it was a design assumption when I wrote the slab allocator.
> Acutally, it's not cheap on non-NUMA either. And the PageCompound()
> check adds an additional branch.
Just FYI, the PageCompound check can go as soon as nommu stops trying to
do its
broken page refcounting on slab pages (whenever that happens :P).
--
Send instant messages to your online friends http://au.messenger.yahoo.com
next prev parent reply other threads:[~2006-05-09 9:03 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-07 23:21 [PATCH] fs: fcntl_setlease defies lease_init assumptions Daniel Hokka Zakrisson
2006-05-08 3:33 ` Linus Torvalds
2006-05-08 3:34 ` Linus Torvalds
2006-05-08 8:02 ` Daniel Hokka Zakrisson
2006-05-08 7:57 ` Daniel Hokka Zakrisson
2006-05-08 8:31 ` Pekka Enberg
2006-05-08 8:34 ` Pekka Enberg
2006-05-08 15:12 ` Linus Torvalds
2006-05-08 16:06 ` Pekka Enberg
2006-05-08 16:28 ` Linus Torvalds
2006-05-08 19:36 ` Pekka Enberg
2006-05-09 3:38 ` Christoph Lameter
2006-05-09 3:49 ` Martin J. Bligh
2006-05-09 5:31 ` Christoph Lameter
2006-05-09 6:16 ` Martin J. Bligh
2006-05-09 6:22 ` Manfred Spraul
2006-05-09 6:35 ` Keith Owens
2006-05-09 6:37 ` Nick Piggin [this message]
2006-05-09 10:26 ` Pekka J Enberg
2006-05-09 18:25 ` Manfred Spraul
2006-05-09 18:56 ` Linus Torvalds
2006-05-09 19:05 ` Pekka Enberg
2006-05-09 19:15 ` Pekka Enberg
2006-05-09 14:40 ` Linus Torvalds
2006-05-09 23:59 ` Christoph Lameter
2006-05-08 16:36 ` Dave Jones
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