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Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC)

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From: Christoph Lameter <clameter@...>
To: Nick Piggin <npiggin@...>
Cc: Peter Zijlstra <a.p.zijlstra@...>, <linux-mm@...>, <linux-kernel@...>, <akpm@...>, <dkegel@...>, David Miller <davem@...>, Daniel Phillips <phillips@...>
Subject: Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC)
Date: Thursday, August 16, 2007 - 4:27 pm

On Thu, 16 Aug 2007, Nick Piggin wrote:


Regular reclaim also cannot immediately write out pages. Writes are 
usually deferred. If you have too many anonymous pages in regular reclaim 
then you can have the same issues.

The difference is that recursive reclaim does not trigger writeout at 
the moment but we could address that by having a pageout list that then 
starts writes from another context. Then both reclaims would be able to 
trigger writeout.

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Messages in current thread:
[RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Tue Aug 14, 10:21 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Daniel Phillips, (Wed Sep 5, 5:20 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Wed Sep 5, 6:42 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Daniel Phillips, (Wed Sep 5, 12:16 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Mon Sep 10, 3:25 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Mon Sep 10, 3:55 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Mon Sep 10, 4:22 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Mon Sep 10, 4:48 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Pavel Machek, (Fri Oct 26, 1:44 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Daniel Phillips, (Sat Oct 27, 7:08 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Fri Oct 26, 1:55 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Daniel Phillips, (Sat Oct 27, 6:58 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Mike Snitzer, (Sat Sep 8, 1:12 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Daniel Phillips, (Mon Sep 17, 8:28 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Mike Snitzer, (Mon Sep 17, 11:27 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Tue Sep 18, 5:30 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Daniel Phillips, (Tue Sep 18, 1:37 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Nick Piggin, (Wed Sep 5, 7:42 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Wed Sep 5, 8:14 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Wed Sep 12, 6:52 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Wed Sep 12, 6:47 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Thu Sep 13, 4:19 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Thu Sep 13, 2:32 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Thu Sep 13, 3:24 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Nick Piggin, (Wed Sep 5, 8:19 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Mon Sep 10, 3:29 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Nick Piggin, (Tue Sep 11, 3:41 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Mon Sep 10, 3:37 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Mon Sep 10, 3:41 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Mon Sep 10, 3:55 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Mon Sep 10, 4:17 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Mon Sep 10, 4:48 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Nick Piggin, (Wed Aug 15, 8:22 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Wed Aug 15, 9:12 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Nick Piggin, (Wed Aug 15, 11:29 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Sun Aug 19, 11:51 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Nick Piggin, (Mon Aug 20, 8:28 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Wed Sep 12, 6:39 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Tue Aug 21, 11:29 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Nick Piggin, (Wed Aug 22, 11:02 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Mon Aug 20, 3:15 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Nick Piggin, (Mon Aug 20, 8:32 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Thu Aug 16, 4:27 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Wed Aug 15, 4:29 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Andi Kleen, (Wed Aug 15, 10:15 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Wed Aug 15, 9:55 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Wed Aug 15, 4:32 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Andi Kleen, (Wed Aug 15, 10:34 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Tue Aug 14, 10:36 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Tue Aug 14, 11:29 am)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Peter Zijlstra, (Tue Aug 14, 3:32 pm)
Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC), Christoph Lameter, (Tue Aug 14, 3:41 pm)