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Re: [PATCH 01 of 12] Core of mmu notifiers

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From: Christoph Lameter <clameter@...>
To: Andrea Arcangeli <andrea@...>
Cc: Robin Holt <holt@...>, Jack Steiner <steiner@...>, Nick Piggin <npiggin@...>, Peter Zijlstra <a.p.zijlstra@...>, <kvm-devel@...>, Kanoj Sarcar <kanojsarcar@...>, Roland Dreier <rdreier@...>, Steve Wise <swise@...>, <linux-kernel@...>, Avi Kivity <avi@...>, <linux-mm@...>, <general@...>, Hugh Dickins <hugh@...>, <akpm@...>, Rusty Russell <rusty@...>
Subject: Re: [PATCH 01 of 12] Core of mmu notifiers
Date: Monday, April 28, 2008 - 4:34 pm

On Sun, 27 Apr 2008, Andrea Arcangeli wrote:


You are going to take a semphore in an rcu section? Guess you did not 
activate all debugging options while testing? I was not aware that you can 
take a sleeping lock from a non preemptible context.


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[PATCH 00 of 12] mmu notifier #v13, Andrea Arcangeli, (Tue Apr 22, 9:51 am)
Re: [PATCH 00 of 12] mmu notifier #v13, Jack Steiner, (Tue Apr 22, 8:31 pm)
Re: [PATCH 00 of 12] mmu notifier #v13, Robin Holt, (Tue Apr 22, 2:22 pm)
Re: [PATCH 00 of 12] mmu notifier #v13, Andrea Arcangeli, (Tue Apr 22, 2:43 pm)
Re: [PATCH 00 of 12] mmu notifier #v13, Christoph Lameter, (Tue Apr 22, 4:28 pm)
Re: [PATCH 00 of 12] mmu notifier #v13, Robin Holt, (Tue Apr 22, 3:42 pm)
Re: [PATCH 00 of 12] mmu notifier #v13, Christoph Lameter, (Tue Apr 22, 4:30 pm)
Re: [PATCH 00 of 12] mmu notifier #v13, Andrea Arcangeli, (Wed Apr 23, 9:33 am)
[PATCH 12 of 12] This patch adds a lock ordering rule to avo..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
[PATCH 11 of 12] XPMEM would have used sys_madvise() except ..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
[PATCH 10 of 12] Convert mm_lock to use semaphores after i_m..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
Re: [PATCH 10 of 12] Convert mm_lock to use semaphores after..., Christoph Lameter, (Tue Apr 22, 4:26 pm)
Re: [PATCH 10 of 12] Convert mm_lock to use semaphores after..., Andrea Arcangeli, (Tue Apr 22, 6:54 pm)
Re: [PATCH 10 of 12] Convert mm_lock to use semaphores after..., Christoph Lameter, (Tue Apr 22, 7:19 pm)
[PATCH 09 of 12] Convert the anon_vma spinlock to a rw semap..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
[PATCH 08 of 12] The conversion to a rwsem allows notifier c..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
[PATCH 07 of 12] Add a function to rw_semaphores to check if..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
[PATCH 06 of 12] Move the tlb flushing inside of unmap vmas...., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
[PATCH 05 of 12] Move the tlb flushing into free_pgtables. T..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
Re: [PATCH 05 of 12] Move the tlb flushing into free_pgtable..., Christoph Lameter, (Tue Apr 22, 4:25 pm)
[PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Tue Apr 22, 9:51 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Jack Steiner, (Wed Apr 23, 1:09 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 1:45 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Tue Apr 22, 4:19 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Tue Apr 22, 6:35 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Tue Apr 22, 7:20 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 12:26 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Wed Apr 23, 2:15 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 1:24 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Wed Apr 23, 2:21 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 2:34 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Robin Holt, (Tue Apr 22, 7:07 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 9:36 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Robin Holt, (Wed Apr 23, 10:47 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 11:59 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Wed Apr 23, 2:09 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 2:19 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Wed Apr 23, 2:27 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 2:37 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Wed Apr 23, 2:46 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Jack Steiner, (Tue Apr 22, 8:28 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 12:37 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 6:19 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Thu Apr 24, 2:49 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Robin Holt, (Thu Apr 24, 5:51 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Thu Apr 24, 11:39 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Thu Apr 24, 1:41 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Robin Holt, (Sat Apr 26, 9:17 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Sun Apr 27, 8:27 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Mon Apr 28, 4:34 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Mon Apr 28, 8:10 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Hugh Dickins, (Tue Apr 29, 6:49 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Tue Apr 29, 9:32 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Mon Apr 28, 9:28 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Tue Apr 29, 11:30 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Robin Holt, (Tue Apr 29, 11:50 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Tue Apr 29, 12:03 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed May 7, 11:00 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Sat Apr 26, 10:04 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Christoph Lameter, (Wed Apr 23, 2:19 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Wed Apr 23, 2:25 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Robin Holt, (Tue Apr 22, 4:31 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Eric Dumazet, (Tue Apr 22, 10:56 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Tue Apr 22, 11:15 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Eric Dumazet, (Tue Apr 22, 11:37 am)
Re: [PATCH 01 of 12] Core of mmu notifiers, Andrea Arcangeli, (Tue Apr 22, 12:46 pm)
Re: [PATCH 01 of 12] Core of mmu notifiers, Avi Kivity, (Tue Apr 22, 11:24 am)
[PATCH 04 of 12] Moves all mmu notifier methods outside the ..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Christoph Lameter, (Tue Apr 22, 4:24 pm)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Andrea Arcangeli, (Tue Apr 22, 6:40 pm)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Christoph Lameter, (Tue Apr 22, 7:14 pm)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Andrea Arcangeli, (Wed Apr 23, 9:44 am)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Christoph Lameter, (Wed Apr 23, 2:02 pm)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Andrea Arcangeli, (Wed Apr 23, 2:16 pm)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Robin Holt, (Wed Apr 23, 11:45 am)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Avi Kivity, (Wed Apr 23, 5:05 pm)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Andrea Arcangeli, (Wed Apr 23, 12:15 pm)
Re: [PATCH 04 of 12] Moves all mmu notifier methods outside ..., Robin Holt, (Wed Apr 23, 3:55 pm)
[PATCH 03 of 12] get_task_mm should not succeed if mmput() i..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
Re: [PATCH 03 of 12] get_task_mm should not succeed if mmput..., Christoph Lameter, (Tue Apr 22, 4:23 pm)
Re: [PATCH 03 of 12] get_task_mm should not succeed if mmput..., Andrea Arcangeli, (Tue Apr 22, 6:37 pm)
Re: [PATCH 03 of 12] get_task_mm should not succeed if mmput..., Christoph Lameter, (Tue Apr 22, 7:13 pm)
[PATCH 02 of 12] Fix ia64 compilation failure because of com..., Andrea Arcangeli, (Tue Apr 22, 9:51 am)
Re: [PATCH 02 of 12] Fix ia64 compilation failure because of..., Christoph Lameter, (Tue Apr 22, 4:22 pm)
Re: [PATCH 02 of 12] Fix ia64 compilation failure because of..., Andrea Arcangeli, (Tue Apr 22, 6:43 pm)
Re: [PATCH 02 of 12] Fix ia64 compilation failure because of..., Robin Holt, (Tue Apr 22, 7:07 pm)