From: Dipankar Sarma <dipankar@in.ibm.com>
To: "Paul E. McKenney" <paulmck@us.ibm.com>
Cc: Matt Mackall <mpm@selenic.com>, Andrew Morton <akpm@osdl.org>,
arjanv@redhat.com, helgehaf@aitel.hist.no,
linux-kernel@vger.kernel.org
Subject: Re: dentry bloat.
Date: Tue, 11 May 2004 00:04:11 +0530 [thread overview]
Message-ID: <20040510183411.GA4813@in.ibm.com> (raw)
In-Reply-To: <20040510162645.GA1646@us.ibm.com>
On Mon, May 10, 2004 at 09:26:45AM -0700, Paul E. McKenney wrote:
> On Mon, May 10, 2004 at 09:54:04AM -0500, Matt Mackall wrote:
> > Ok, I can spin something up. I'll start with a generic no-RCU-on-UP
> > and then we can think about the small SMP case a bit later.
>
> Hello, Matt,
>
> You may wish to start with the dcache portion of Dipankar's earlier patch:
>
> http://sourceforge.net/mailarchive/forum.php?thread_id=3644163&forum_id=730
>
> It does not remove the extra rcu_head from the dentry, but does the
> rest of the work.
Matt and I had discussed this privately sometime ago and I will
send him somewhat cleaned up patches that introduces call_rcu_direct()
which, in UP kernel, invokes the callback directly. The corresponding
read-side critical section will have to protect itself with
rcu_read_lock_bh() or rcu_read_lock_irq() if an update can happen
from softirq or irq context.
Thanks
Dipankar
next prev parent reply other threads:[~2004-05-10 19:09 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20040506200027.GC26679@redhat.com>
[not found] ` <20040506150944.126bb409.akpm@osdl.org>
[not found] ` <409B1511.6010500@colorfullife.com>
2004-05-08 8:23 ` dentry bloat Andrew Morton
2004-05-08 9:23 ` Andrew Morton
2004-05-08 10:11 ` Andrew Morton
2004-05-08 10:12 ` Andrew Morton
2004-05-08 10:28 ` viro
2004-05-08 10:41 ` Andrew Morton
2004-05-08 10:52 ` Andrew Morton
2004-05-08 10:31 ` Manfred Spraul
2004-05-08 17:28 ` Linus Torvalds
2004-05-08 18:19 ` David S. Miller
2004-05-08 19:01 ` Andrew Morton
2004-05-08 19:13 ` Linus Torvalds
2004-05-08 19:27 ` Andrew Morton
2004-05-08 19:27 ` Linus Torvalds
2004-05-08 20:42 ` Dipankar Sarma
2004-05-08 20:55 ` Andrew Morton
2004-05-08 21:19 ` Dipankar Sarma
2004-05-09 0:10 ` Andrew Morton
2004-05-09 2:55 ` Linus Torvalds
2004-05-09 3:12 ` David S. Miller
2004-05-09 3:53 ` Linus Torvalds
2004-05-09 21:03 ` Matt Mackall
2004-05-10 8:27 ` Helge Hafting
2004-05-10 8:32 ` Arjan van de Ven
2004-05-10 9:46 ` Andrew Morton
2004-05-10 14:54 ` Matt Mackall
2004-05-10 16:26 ` Paul E. McKenney
2004-05-10 18:34 ` Dipankar Sarma [this message]
2004-05-09 4:12 ` Andrew Morton
2004-05-09 4:25 ` Linus Torvalds
2004-05-09 4:36 ` Andrew Morton
2004-05-09 5:14 ` Linus Torvalds
2004-05-09 7:36 ` Rodolfo Guluarte Hale
2004-05-09 9:10 ` Guennadi Liakhovetski
2004-05-09 9:23 ` viro
2004-05-09 15:35 ` Linus Torvalds
2004-05-09 18:11 ` Matt Mackall
2004-05-09 22:08 ` Francois Romieu
2004-05-09 23:51 ` Paul Jackson
2004-05-10 7:17 ` Florian Weimer
2004-05-10 14:12 ` Rik van Riel
2004-05-09 4:43 ` Linus Torvalds
2004-05-09 7:28 ` Manfred Spraul
2004-05-09 15:33 ` Dipankar Sarma
2004-05-09 22:17 ` viro
2004-05-09 22:27 ` Andrew Morton
2004-05-11 5:26 ` Maneesh Soni
2004-05-10 18:39 ` Dipankar Sarma
2004-05-11 5:17 ` Maneesh Soni
2004-05-08 20:13 ` Dipankar Sarma
2004-10-06 12:58 ` Maneesh Soni
2004-05-11 20:22 ` Andrew Morton
2004-05-14 10:33 ` Raghavan
2004-05-14 10:50 ` Paul Jackson
2004-05-14 11:04 ` Jens Axboe
2004-05-14 11:14 ` Paul Jackson
2004-05-14 11:24 ` Dipankar Sarma
2004-05-14 11:24 ` Jens Axboe
2004-05-14 11:30 ` Paul Jackson
2004-05-14 11:18 ` Dipankar Sarma
2004-05-14 14:44 ` Linus Torvalds
2004-05-08 21:00 ` Dipankar Sarma
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