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Re: EMM: disable other notifiers before register and unregister

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From: Christoph Lameter
Subject: Re: EMM: disable other notifiers before register and unregister
Date: Thursday, April 3, 2008 - 1:23 pm

On Thu, 3 Apr 2008, Christoph Lameter wrote:


Another hammer to use may be the freezer from software suspend. With that 
you can get all tasks of a process into a definite state. Then take the 
mmap_sem writably. But then there is still try_to_unmap and friends that 
can race.


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Messages in current thread:
[patch 1/9] EMM Notifier: The notifier calls, Christoph Lameter, (Tue Apr 1, 1:55 pm)
Re: [patch 1/9] EMM Notifier: The notifier calls, Peter Zijlstra, (Tue Apr 1, 2:14 pm)
Re: [patch 1/9] EMM Notifier: The notifier calls, Paul E. McKenney, (Tue Apr 1, 2:38 pm)
Re: [patch 1/9] EMM Notifier: The notifier calls, Andrea Arcangeli, (Tue Apr 1, 11:49 pm)
Re: [patch 1/9] EMM Notifier: The notifier calls, Robin Holt, (Wed Apr 2, 3:59 am)
Re: [patch 1/9] EMM Notifier: The notifier calls, Andrea Arcangeli, (Wed Apr 2, 4:16 am)
Re: [patch 1/9] EMM Notifier: The notifier calls, Robin Holt, (Wed Apr 2, 7:26 am)
Re: [patch 1/9] EMM Notifier: The notifier calls, Christoph Lameter, (Wed Apr 2, 10:44 am)
Re: [patch 1/9] EMM Notifier: The notifier calls, Christoph Lameter, (Wed Apr 2, 10:59 am)
EMM: Fix rcu handling and spelling, Christoph Lameter, (Wed Apr 2, 11:43 am)
Re: EMM: Fix rcu handling and spelling, Paul E. McKenney, (Wed Apr 2, 12:02 pm)
EMM: Fixup return value handling of emm_notify(), Christoph Lameter, (Wed Apr 2, 12:03 pm)
EMM: Require single threadedness for registration., Christoph Lameter, (Wed Apr 2, 2:05 pm)
Re: EMM: Fixup return value handling of emm_notify(), Andrea Arcangeli, (Wed Apr 2, 2:25 pm)
Re: EMM: Fixup return value handling of emm_notify(), Christoph Lameter, (Wed Apr 2, 2:33 pm)
Re: [patch 1/9] EMM Notifier: The notifier calls, Andrea Arcangeli, (Wed Apr 2, 2:53 pm)
Re: [patch 1/9] EMM Notifier: The notifier calls, Christoph Lameter, (Wed Apr 2, 2:54 pm)
Re: EMM: Require single threadedness for registration., Andrea Arcangeli, (Wed Apr 2, 3:01 pm)
Re: EMM: Require single threadedness for registration., Christoph Lameter, (Wed Apr 2, 3:06 pm)
Re: [patch 1/9] EMM Notifier: The notifier calls, Andrea Arcangeli, (Wed Apr 2, 3:09 pm)
Re: EMM: Require single threadedness for registration., Andrea Arcangeli, (Wed Apr 2, 3:17 pm)
Re: EMM: Require single threadedness for registration., Christoph Lameter, (Wed Apr 2, 3:41 pm)
Re: [patch 1/9] EMM Notifier: The notifier calls, Christoph Lameter, (Wed Apr 2, 4:04 pm)
EMM: disable other notifiers before register and unregister, Christoph Lameter, (Wed Apr 2, 6:24 pm)
Re: EMM: Fixup return value handling of emm_notify(), Peter Zijlstra, (Thu Apr 3, 3:40 am)
Re: EMM: disable other notifiers before register and unreg ..., Peter Zijlstra, (Thu Apr 3, 3:40 am)
Re: EMM: Fixup return value handling of emm_notify(), Andrea Arcangeli, (Thu Apr 3, 8:00 am)
Re: EMM: disable other notifiers before register and unreg ..., Andrea Arcangeli, (Thu Apr 3, 8:29 am)
Re: EMM: Fixup return value handling of emm_notify(), Christoph Lameter, (Thu Apr 3, 12:14 pm)
Re: EMM: disable other notifiers before register and unreg ..., Christoph Lameter, (Thu Apr 3, 12:20 pm)
Re: EMM: disable other notifiers before register and unreg ..., Christoph Lameter, (Thu Apr 3, 1:23 pm)
Re: EMM: disable other notifiers before register and unreg ..., Andrea Arcangeli, (Fri Apr 4, 5:30 am)
[PATCH] mmu notifier #v11, Andrea Arcangeli, (Fri Apr 4, 1:20 pm)
Re: [PATCH] mmu notifier #v11, Christoph Lameter, (Fri Apr 4, 3:06 pm)
Re: [PATCH] mmu notifier #v11, Andrea Arcangeli, (Fri Apr 4, 5:23 pm)
Re: [PATCH] mmu notifier #v11, Christoph Lameter, (Sun Apr 6, 10:45 pm)
Re: [PATCH] mmu notifier #v11, Andrea Arcangeli, (Sun Apr 6, 11:02 pm)