From: Christoph Lameter <clameter@sgi.com>
To: Andrea Arcangeli <andrea@qumranet.com>
Cc: Robin Holt <holt@sgi.com>, Nick Piggin <npiggin@suse.de>,
Jack Steiner <steiner@sgi.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
kvm-devel@lists.sourceforge.net,
Kanoj Sarcar <kanojsarcar@yahoo.com>,
Roland Dreier <rdreier@cisco.com>,
Steve Wise <swise@opengridcomputing.com>,
linux-kernel@vger.kernel.org, Avi Kivity <avi@qumranet.com>,
linux-mm@kvack.org, general@lists.openfabrics.org,
Hugh Dickins <hugh@veritas.com>,
akpm@linux-foundation.org, Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [PATCH 01 of 12] Core of mmu notifiers
Date: Wed, 23 Apr 2008 11:09:35 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0804231105090.12373@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20080423155940.GY24536@duo.random>
On Wed, 23 Apr 2008, Andrea Arcangeli wrote:
> Implement unregister but it's not reliable, only ->release is reliable.
Why is there still the hlist stuff being used for the mmu notifier list?
And why is this still unsafe?
There are cases in which you do not take the reverse map locks or mmap_sem
while traversing the notifier list?
This hope for inclusion without proper review (first for .25 now for .26)
seems to interfere with the patch cleanup work and cause delay after delay
for getting the patch ready. On what basis do you think that there is a
chance of any of these patches making it into 2.6.26 given that this
patchset has never been vetted in Andrew's tree?
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next prev parent reply other threads:[~2008-04-23 18:09 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-22 13:51 [PATCH 00 of 12] mmu notifier #v13 Andrea Arcangeli
2008-04-22 13:51 ` [PATCH 01 of 12] Core of mmu notifiers Andrea Arcangeli
2008-04-22 14:56 ` Eric Dumazet
2008-04-22 15:15 ` Andrea Arcangeli
2008-04-22 15:24 ` Avi Kivity
2008-04-22 15:37 ` Eric Dumazet
2008-04-22 16:46 ` Andrea Arcangeli
2008-04-22 20:19 ` Christoph Lameter
2008-04-22 20:31 ` Robin Holt
2008-04-22 22:35 ` Andrea Arcangeli
2008-04-22 23:07 ` Robin Holt
2008-04-23 0:28 ` Jack Steiner
2008-04-23 16:37 ` Andrea Arcangeli
2008-04-23 18:19 ` Christoph Lameter
2008-04-23 18:25 ` Andrea Arcangeli
2008-04-23 22:19 ` Andrea Arcangeli
2008-04-24 6:49 ` Andrea Arcangeli
2008-04-24 9:51 ` Robin Holt
2008-04-24 15:39 ` Andrea Arcangeli
2008-04-24 17:41 ` Andrea Arcangeli
2008-04-26 13:17 ` Robin Holt
2008-04-26 14:04 ` Andrea Arcangeli
2008-04-27 12:27 ` Andrea Arcangeli
2008-04-28 20:34 ` Christoph Lameter
2008-04-29 0:10 ` Andrea Arcangeli
2008-04-29 1:28 ` Christoph Lameter
2008-04-29 15:30 ` Andrea Arcangeli
2008-04-29 15:50 ` Robin Holt
2008-04-29 16:03 ` Andrea Arcangeli
2008-05-07 15:00 ` Andrea Arcangeli
2008-04-29 10:49 ` Hugh Dickins
2008-04-29 13:32 ` Andrea Arcangeli
2008-04-23 13:36 ` Andrea Arcangeli
2008-04-23 14:47 ` Robin Holt
2008-04-23 15:59 ` Andrea Arcangeli
2008-04-23 18:09 ` Christoph Lameter [this message]
2008-04-23 18:19 ` Andrea Arcangeli
2008-04-23 18:27 ` Christoph Lameter
2008-04-23 18:37 ` Andrea Arcangeli
2008-04-23 18:46 ` Christoph Lameter
2008-04-22 23:20 ` Christoph Lameter
2008-04-23 16:26 ` Andrea Arcangeli
2008-04-23 17:24 ` Andrea Arcangeli
2008-04-23 18:21 ` Christoph Lameter
2008-04-23 18:34 ` Andrea Arcangeli
2008-04-23 18:15 ` Christoph Lameter
2008-04-23 17:09 ` Jack Steiner
2008-04-23 17:45 ` Andrea Arcangeli
2008-04-22 13:51 ` [PATCH 02 of 12] Fix ia64 compilation failure because of common code include bug Andrea Arcangeli
2008-04-22 20:22 ` Christoph Lameter
2008-04-22 22:43 ` Andrea Arcangeli
2008-04-22 23:07 ` Robin Holt
2008-04-22 13:51 ` [PATCH 03 of 12] get_task_mm should not succeed if mmput() is running and has reduced Andrea Arcangeli
2008-04-22 20:23 ` Christoph Lameter
2008-04-22 22:37 ` Andrea Arcangeli
2008-04-22 23:13 ` Christoph Lameter
2008-04-22 13:51 ` [PATCH 04 of 12] Moves all mmu notifier methods outside the PT lock (first and not last Andrea Arcangeli
2008-04-22 20:24 ` Christoph Lameter
2008-04-22 22:40 ` Andrea Arcangeli
2008-04-22 23:14 ` Christoph Lameter
2008-04-23 13:44 ` Andrea Arcangeli
2008-04-23 15:45 ` Robin Holt
2008-04-23 16:15 ` Andrea Arcangeli
2008-04-23 19:55 ` Robin Holt
2008-04-23 21:05 ` Avi Kivity
2008-04-23 18:02 ` Christoph Lameter
2008-04-23 18:16 ` Andrea Arcangeli
2008-04-22 13:51 ` [PATCH 05 of 12] Move the tlb flushing into free_pgtables. The conversion of the locks Andrea Arcangeli
2008-04-22 20:25 ` Christoph Lameter
2008-04-22 13:51 ` [PATCH 06 of 12] Move the tlb flushing inside of unmap vmas. This saves us from passing Andrea Arcangeli
2008-04-22 13:51 ` [PATCH 07 of 12] Add a function to rw_semaphores to check if there are any processes Andrea Arcangeli
2008-04-22 13:51 ` [PATCH 08 of 12] The conversion to a rwsem allows notifier callbacks during rmap traversal Andrea Arcangeli
2008-04-22 13:51 ` [PATCH 09 of 12] Convert the anon_vma spinlock to a rw semaphore. This allows concurrent Andrea Arcangeli
2008-04-22 13:51 ` [PATCH 10 of 12] Convert mm_lock to use semaphores after i_mmap_lock and anon_vma_lock Andrea Arcangeli
2008-04-22 20:26 ` Christoph Lameter
2008-04-22 22:54 ` Andrea Arcangeli
2008-04-22 23:19 ` Christoph Lameter
2008-04-22 13:51 ` [PATCH 11 of 12] XPMEM would have used sys_madvise() except that madvise_dontneed() Andrea Arcangeli
2008-04-22 13:51 ` [PATCH 12 of 12] This patch adds a lock ordering rule to avoid a potential deadlock when Andrea Arcangeli
2008-04-22 18:22 ` [PATCH 00 of 12] mmu notifier #v13 Robin Holt
2008-04-22 18:43 ` Andrea Arcangeli
2008-04-22 19:42 ` Robin Holt
2008-04-22 20:30 ` Christoph Lameter
2008-04-23 13:33 ` Andrea Arcangeli
2008-04-22 20:28 ` Christoph Lameter
2008-04-23 0:31 ` Jack Steiner
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