From: David Miller <davem@davemloft.net>
To: Jesper.Nilsson@axis.com
Cc: tj@kernel.org, gregkh@suse.de, stern@rowland.harvard.edu,
jens.axboe@oracle.com, hinko.kocevar@cetrtapot.si,
linux-kernel@vger.kernel.org
Subject: Re: lib/klist.c: bit 0 in pointer can't be used as flag
Date: Tue, 13 Jan 2009 14:42:08 -0800 (PST) [thread overview]
Message-ID: <20090113.144208.151478270.davem@davemloft.net> (raw)
In-Reply-To: <20090113221235.GD19262@axis.com>
From: Jesper Nilsson <Jesper.Nilsson@axis.com>
Date: Tue, 13 Jan 2009 23:12:35 +0100
> Can you recall another place where this trick is used?
>
> It seems that rt_mutex uses the same trick (with the lowest 2bits)
> but AFAICT that's something we don't use on CRIS.
Sparsemem uses it.
The TRIE based routing tables uses it.
All of the IPV4/IPV6 socket hash tables use it as of 2.6.29-rc1.
You really can't avoid supporting this. Why doesn't kmalloc
return properly aligned objects on CRIS?
prev parent reply other threads:[~2009-01-13 22:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-13 15:14 Jesper Nilsson
2009-01-13 21:10 ` David Miller
2009-01-13 22:12 ` Jesper Nilsson
2009-01-13 22:40 ` KOSAKI Motohiro
2009-01-13 22:45 ` David Miller
2009-01-13 23:11 ` Bastien ROUCARIES
2009-01-14 10:19 ` Jesper Nilsson
2009-01-14 10:21 ` David Miller
2009-01-14 10:36 ` Jesper Nilsson
2009-01-14 10:45 ` David Miller
2009-01-14 11:02 ` Jesper Nilsson
2009-01-14 15:12 ` Jesper Nilsson
2009-01-14 18:17 ` Greg KH
2009-01-14 21:53 ` Jesper Nilsson
2009-01-13 23:54 ` KOSAKI Motohiro
2009-01-13 23:59 ` Greg KH
2009-01-14 10:25 ` Jesper Nilsson
2009-01-14 0:33 ` Hugh Dickins
2009-01-14 10:18 ` Jesper Nilsson
2009-01-13 22:42 ` David Miller [this message]
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