From: Arjan van de Ven <arjan@infradead.org>
To: Roland Dreier <rdreier@cisco.com>
Cc: Andrew Morton <akpm@osdl.org>,
mingo@elte.hu, zach.brown@oracle.com, openib-general@openib.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Convert idr's internal locking to _irqsave variant
Date: Thu, 13 Jul 2006 23:05:46 +0200 [thread overview]
Message-ID: <1152824747.3024.92.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <adau05lrzdy.fsf@cisco.com>
On Thu, 2006-07-13 at 14:03 -0700, Roland Dreier wrote:
> > I suspect it'll get really ugly. It's a container library which needs to
> > allocate memory when items are added, like the radix-tree. Either it needs
> > to assume GFP_ATOMIC, which is bad and can easily fail or it does weird
> > things like radix_tree_preload().
>
> Actually I don't think it has to be too bad. We could tweak the
> interface a little bit so that consumers do something like:
>
>
it does get harder if this is needed for your IB device to do
more work, so that your swap device on your IB can take more IO's
to free up ram..
next prev parent reply other threads:[~2006-07-13 21:05 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-11 20:10 ipoib lockdep warning Zach Brown
2006-07-11 21:16 ` Michael S. Tsirkin
2006-07-11 21:40 ` Sean Hefty
2006-07-11 21:50 ` [openib-general] " Zach Brown
2006-07-11 22:54 ` Roland Dreier
2006-07-11 23:27 ` Zach Brown
2006-07-11 23:43 ` Roland Dreier
2006-07-11 23:53 ` Zach Brown
2006-07-12 0:06 ` Roland Dreier
2006-07-12 9:38 ` Ingo Molnar
2006-07-12 11:09 ` Michael S. Tsirkin
2006-07-12 16:31 ` [openib-general] " Sean Hefty
2006-07-12 18:56 ` Roland Dreier
2006-07-13 15:55 ` [PATCH] IB/core: use correct gfp_mask in sa_query Michael S. Tsirkin
2006-07-12 19:06 ` [openib-general] ipoib lockdep warning Roland Dreier
2006-07-12 20:45 ` [PATCH] Convert idr's internal locking to _irqsave variant Roland Dreier
2006-07-12 21:14 ` Ingo Molnar
2006-07-13 1:30 ` Andrew Morton
2006-07-13 15:42 ` Roland Dreier
2006-07-13 20:54 ` Andrew Morton
2006-07-13 21:03 ` Roland Dreier
2006-07-13 21:05 ` Arjan van de Ven [this message]
2006-07-14 0:18 ` Roland Dreier
2006-07-14 6:20 ` Arjan van de Ven
2006-07-13 21:43 ` Andrew Morton
2006-07-14 1:08 ` Roland Dreier
2006-07-14 1:18 ` Andrew Morton
2006-07-14 1:30 ` Andrew Morton
2006-07-17 15:57 ` Roland Dreier
2006-07-12 2:33 ` [openib-general] ipoib lockdep warning Roland Dreier
2006-07-12 6:49 ` Arjan van de Ven
2006-07-12 19:01 ` Roland Dreier
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