From: Christoph Lameter <clameter@sgi.com>
To: Andrea Arcangeli <andrea@qumranet.com>
Cc: Robin Holt <holt@sgi.com>, Avi Kivity <avi@qumranet.com>,
Izik Eidus <izike@qumranet.com>,
kvm-devel@lists.sourceforge.net,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
steiner@sgi.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, daniel.blueman@quadrics.com
Subject: Re: mmu_notifier: reduce size of mm_struct if !CONFIG_MMU_NOTIFIER
Date: Thu, 31 Jan 2008 14:16:10 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0801311415280.15573@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801311355260.27804@schroedinger.engr.sgi.com>
Andrea and Peter had a concern about this.
Use an #ifdef to make the mmu_notifer_head structure empty if we have
no notifier. That allows the use of the structure in inline functions
(which allows parameter verification even if !CONFIG_MMU_NOTIFIER)
Signed-off-by: Christoph Lameter <clameter@sgi.com>
---
include/linux/mm_types.h | 2 ++
1 file changed, 2 insertions(+)
Index: linux-2.6/include/linux/mm_types.h
===================================================================
--- linux-2.6.orig/include/linux/mm_types.h 2008-01-31 14:03:23.000000000 -0800
+++ linux-2.6/include/linux/mm_types.h 2008-01-31 14:03:38.000000000 -0800
@@ -154,7 +154,9 @@ struct vm_area_struct {
};
struct mmu_notifier_head {
+#ifdef CONFIG_MMU_NOTIFIER
struct hlist_head head;
+#endif
};
struct mm_struct {
--
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next prev parent reply other threads:[~2008-01-31 22:16 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-31 4:57 [patch 0/3] [RFC] MMU Notifiers V4 Christoph Lameter
2008-01-31 4:57 ` [patch 1/3] mmu_notifier: Core code Christoph Lameter
2008-02-01 1:56 ` Jack Steiner
2008-02-01 2:24 ` Robin Holt
2008-02-01 2:37 ` Jack Steiner
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:31 ` Robin Holt
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:47 ` Robin Holt
2008-02-01 3:01 ` Christoph Lameter
2008-02-01 3:01 ` Jack Steiner
2008-02-01 3:03 ` Christoph Lameter
2008-02-01 3:52 ` Robin Holt
2008-02-01 3:58 ` Christoph Lameter
2008-02-01 4:15 ` Robin Holt
2008-02-03 1:33 ` Andrea Arcangeli
2008-02-04 19:13 ` Christoph Lameter
2008-01-31 4:57 ` [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
2008-01-31 12:31 ` Andrea Arcangeli
2008-01-31 20:07 ` Christoph Lameter
2008-01-31 22:01 ` mmu_notifier: close hole in fork Christoph Lameter
2008-01-31 22:16 ` Christoph Lameter [this message]
2008-01-31 22:21 ` mmu_notifier: Move mmu_notifier_release up to get rid of the invalidat_all() callback Christoph Lameter
2008-02-01 0:13 ` Andrea Arcangeli
2008-02-01 1:52 ` Christoph Lameter
2008-02-01 1:57 ` mmu_notifier: invalidate_range for move_page_tables Christoph Lameter
2008-02-01 2:38 ` Robin Holt
2008-02-01 2:41 ` Christoph Lameter
2008-02-01 0:01 ` mmu_notifier: close hole in fork Andrea Arcangeli
2008-02-01 1:48 ` Christoph Lameter
2008-02-01 4:24 ` [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges Robin Holt
2008-02-01 4:43 ` Christoph Lameter
2008-02-01 10:32 ` Robin Holt
2008-02-01 10:37 ` Robin Holt
2008-02-01 19:13 ` Christoph Lameter
2008-01-31 4:57 ` [patch 3/3] mmu_notifier: invalidate_page callbacks Christoph Lameter
2008-01-31 17:18 ` [PATCH] mmu notifiers #v5 Andrea Arcangeli
2008-01-31 20:18 ` Christoph Lameter
2008-01-31 23:09 ` Christoph Lameter
2008-01-31 23:41 ` Andrea Arcangeli
2008-02-01 1:44 ` Christoph Lameter
2008-02-01 12:09 ` Andrea Arcangeli
2008-02-01 19:23 ` Christoph Lameter
2008-02-03 2:17 ` Andrea Arcangeli
2008-02-03 3:14 ` Jack Steiner
2008-02-03 3:33 ` Andrea Arcangeli
2008-02-04 19:09 ` Christoph Lameter
2008-02-05 5:25 ` Andrea Arcangeli
2008-02-05 6:11 ` Christoph Lameter
2008-02-05 18:08 ` Andrea Arcangeli
2008-02-05 18:17 ` Christoph Lameter
2008-02-05 20:55 ` Andrea Arcangeli
2008-02-05 22:06 ` Christoph Lameter
2008-02-05 22:12 ` Robin Holt
2008-02-05 22:26 ` Andrea Arcangeli
2008-02-05 23:10 ` Christoph Lameter
2008-02-05 23:47 ` Andrea Arcangeli
2008-02-06 0:04 ` Christoph Lameter
2008-01-31 23:28 ` Andrea Arcangeli
2008-02-01 1:37 ` Christoph Lameter
2008-02-01 2:23 ` Robin Holt
2008-02-01 2:26 ` Christoph Lameter
2008-02-01 12:00 ` Andrea Arcangeli
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