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Re: [PATCH 3/3] mm,migration: Remove straggling migration PTEs when page tables are being moved after the VMA has already moved

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From: Andrea Arcangeli
Subject: Re: [PATCH 3/3] mm,migration: Remove straggling migration PTEs when page tables are being moved after the VMA has already moved
Date: Tuesday, April 27, 2010 - 5:08 pm

On Wed, Apr 28, 2010 at 09:03:02AM +0900, KAMEZAWA Hiroyuki wrote:

My proposed fix avoids to walk the pagetables once more time and to
mangle over the page counts. Can you check it? It works but it needs
more review.
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[PATCH 0/3] Fix migration races in rmap_walk() V2, Mel Gorman, (Tue Apr 27, 2:30 pm)
[PATCH 1/3] mm,migration: During fork(), wait for migratio ..., Mel Gorman, (Tue Apr 27, 2:30 pm)
[PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] see ..., Mel Gorman, (Tue Apr 27, 2:30 pm)
[PATCH 3/3] mm,migration: Remove straggling migration PTEs ..., Mel Gorman, (Tue Apr 27, 2:30 pm)
Re: [PATCH 1/3] mm,migration: During fork(), wait for migr ..., Andrea Arcangeli, (Tue Apr 27, 3:22 pm)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Christoph Lameter, (Tue Apr 27, 3:27 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Tue Apr 27, 3:30 pm)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Andrea Arcangeli, (Tue Apr 27, 3:32 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Tue Apr 27, 3:58 pm)
Re: [PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] ..., Andrea Arcangeli, (Tue Apr 27, 4:10 pm)
Re: [PATCH 1/3] mm,migration: During fork(), wait for migr ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 4:52 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 5:03 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Tue Apr 27, 5:08 pm)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, KAMEZAWA Hiroyuki, (Tue Apr 27, 5:13 pm)
Re: [PATCH 1/3] mm,migration: During fork(), wait for migr ..., Andrea Arcangeli, (Tue Apr 27, 5:18 pm)
Re: [PATCH 1/3] mm,migration: During fork(), wait for migr ..., Andrea Arcangeli, (Tue Apr 27, 5:19 pm)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Andrea Arcangeli, (Tue Apr 27, 5:20 pm)
Re: [PATCH 1/3] mm,migration: During fork(), wait for migr ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 5:28 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 5:36 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 5:39 pm)
Re: [PATCH 1/3] mm,migration: During fork(), wait for migr ..., Andrea Arcangeli, (Tue Apr 27, 5:59 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Tue Apr 27, 6:05 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Tue Apr 27, 6:09 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 6:18 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 6:29 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Tue Apr 27, 6:36 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Tue Apr 27, 6:44 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 7:12 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Tue Apr 27, 7:42 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Tue Apr 27, 7:49 pm)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Wed Apr 28, 12:28 am)
Re: [PATCH 1/3] mm,migration: During fork(), wait for migr ..., Mel Gorman, (Wed Apr 28, 1:24 am)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., KAMEZAWA Hiroyuki, (Wed Apr 28, 1:30 am)
Re: [PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] ..., Mel Gorman, (Wed Apr 28, 2:15 am)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Mel Gorman, (Wed Apr 28, 2:17 am)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Mel Gorman, (Wed Apr 28, 3:48 am)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Mel Gorman, (Wed Apr 28, 7:23 am)
Re: [PATCH 3/3] mm,migration: Remove straggling migration ..., Andrea Arcangeli, (Wed Apr 28, 7:46 am)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Mel Gorman, (Wed Apr 28, 7:57 am)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Andrea Arcangeli, (Wed Apr 28, 8:16 am)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Mel Gorman, (Wed Apr 28, 8:23 am)
Re: [PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] ..., Andrea Arcangeli, (Wed Apr 28, 8:35 am)
Re: [PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] ..., Andrea Arcangeli, (Wed Apr 28, 8:39 am)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Andrea Arcangeli, (Wed Apr 28, 8:45 am)
Re: [PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] ..., Mel Gorman, (Wed Apr 28, 8:55 am)
Re: [PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] ..., Andrea Arcangeli, (Wed Apr 28, 9:23 am)
Re: [PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] ..., Mel Gorman, (Wed Apr 28, 10:34 am)
[RFC PATCH] take all anon_vma locks in anon_vma_lock, Rik van Riel, (Wed Apr 28, 10:47 am)
Re: [PATCH 2/3] mm,migration: Prevent rmap_walk_[anon|ksm] ..., Andrea Arcangeli, (Wed Apr 28, 10:58 am)
Re: [RFC PATCH] take all anon_vma locks in anon_vma_lock, Andrea Arcangeli, (Wed Apr 28, 11:03 am)
Re: [RFC PATCH] take all anon_vma locks in anon_vma_lock, Rik van Riel, (Wed Apr 28, 11:09 am)
[RFC PATCH -v2] take all anon_vma locks in anon_vma_lock, Rik van Riel, (Wed Apr 28, 11:25 am)
Re: [RFC PATCH -v2] take all anon_vma locks in anon_vma_lock, Mel Gorman, (Wed Apr 28, 12:07 pm)
[RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Rik van Riel, (Wed Apr 28, 1:17 pm)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Andrea Arcangeli, (Wed Apr 28, 1:40 pm)
[RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Rik van Riel, (Wed Apr 28, 1:57 pm)
Re: [PATCH 0/3] Fix migration races in rmap_walk() V2, Andrea Arcangeli, (Wed Apr 28, 2:05 pm)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Minchan Kim, (Wed Apr 28, 5:28 pm)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Rik van Riel, (Wed Apr 28, 7:10 pm)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Minchan Kim, (Wed Apr 28, 7:55 pm)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Minchan Kim, (Wed Apr 28, 11:42 pm)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Mel Gorman, (Thu Apr 29, 12:37 am)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Mel Gorman, (Thu Apr 29, 1:15 am)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Minchan Kim, (Thu Apr 29, 1:32 am)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Mel Gorman, (Thu Apr 29, 1:44 am)
Re: [RFC PATCH -v3] take all anon_vma locks in anon_vma_lock, Rik van Riel, (Thu Apr 29, 8:39 am)