From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Bill Davidsen <davidsen@tmr.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
netdev@vger.kernel.org, trond.myklebust@fys.uio.no
Subject: Re: [PATCH 00/29] Swap over NFS -v15
Date: Thu, 20 Dec 2007 09:00:04 +0100 [thread overview]
Message-ID: <1198137604.6484.25.camel@twins> (raw)
In-Reply-To: <476999B7.1000203@tmr.com>
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On Wed, 2007-12-19 at 17:22 -0500, Bill Davidsen wrote:
> Peter Zijlstra wrote:
> > Hi,
> >
> > Another posting of the full swap over NFS series.
> >
> > Andrew/Linus, could we start thinking of sticking this in -mm?
> >
>
> Two questions:
> 1 - what is the memory use impact on the system which don't do swap over
> NFS, such as embedded systems, and
It should have little to no impact if not used.
> 2 - what is the advantage of this code over the two existing network
> swap approaches,
> swapping to NFS mounted file and
This is not actually possible with a recent kernel, current swapfile
support requires a blockdevice.
> swap to NBD device?
> I've used the NFS file when a program was running out of memory and that
> seemed to work, people in UNYUUG have reported that the nbd swap works,
> so what's better here?
swap over NBD works sometimes, its rather easy to deadlock, and its
impossible to recover from a broken connection.
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prev parent reply other threads:[~2007-12-20 8:00 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-14 15:39 [PATCH 00/29] Swap over NFS -v15 Peter Zijlstra
2007-12-14 15:39 ` [PATCH 01/29] mm: gfp_to_alloc_flags() Peter Zijlstra
2007-12-14 15:39 ` [PATCH 02/29] mm: tag reseve pages Peter Zijlstra
2007-12-14 15:39 ` [PATCH 03/29] mm: slb: add knowledge of reserve pages Peter Zijlstra
2007-12-14 22:51 ` Daniel Phillips
2007-12-15 10:10 ` Daniel Phillips
2007-12-14 15:39 ` [PATCH 04/29] mm: kmem_estimate_pages() Peter Zijlstra
2007-12-14 22:05 ` Daniel Phillips
2007-12-14 15:39 ` [PATCH 05/29] mm: allow PF_MEMALLOC from softirq context Peter Zijlstra
2007-12-14 15:39 ` [PATCH 06/29] mm: serialize access to min_free_kbytes Peter Zijlstra
2007-12-14 15:39 ` [PATCH 07/29] mm: emergency pool Peter Zijlstra
2007-12-14 15:39 ` [PATCH 08/29] mm: system wide ALLOC_NO_WATERMARK Peter Zijlstra
2007-12-14 15:39 ` [PATCH 09/29] mm: __GFP_MEMALLOC Peter Zijlstra
2007-12-14 15:39 ` [PATCH 10/29] mm: memory reserve management Peter Zijlstra
2007-12-14 15:39 ` [PATCH 11/29] selinux: tag avc cache alloc as non-critical Peter Zijlstra
2007-12-14 15:39 ` [PATCH 12/29] net: wrap sk->sk_backlog_rcv() Peter Zijlstra
2007-12-14 15:39 ` [PATCH 13/29] net: packet split receive api Peter Zijlstra
2007-12-14 15:39 ` [PATCH 14/29] net: sk_allocation() - concentrate socket related allocations Peter Zijlstra
2007-12-14 15:39 ` [PATCH 15/29] netvm: network reserve infrastructure Peter Zijlstra
2007-12-14 15:39 ` [PATCH 16/29] netvm: INET reserves Peter Zijlstra
2007-12-14 21:10 ` Daniel Phillips
2007-12-14 15:39 ` [PATCH 17/29] netvm: hook skb allocation to reserves Peter Zijlstra
2007-12-14 15:39 ` [PATCH 18/29] netvm: filter emergency skbs Peter Zijlstra
2007-12-14 15:39 ` [PATCH 19/29] netvm: prevent a TCP specific deadlock Peter Zijlstra
2007-12-14 15:39 ` [PATCH 20/29] netfilter: NF_QUEUE vs emergency skbs Peter Zijlstra
2007-12-14 15:39 ` [PATCH 21/29] netvm: skb processing Peter Zijlstra
2007-12-14 15:39 ` [PATCH 22/29] mm: prepare swap entry methods for use in page methods Peter Zijlstra
2007-12-14 15:39 ` [PATCH 23/29] mm: add support for non block device backed swap files Peter Zijlstra
2007-12-14 15:39 ` [PATCH 24/29] mm: methods for teaching filesystems about PG_swapcache pages Peter Zijlstra
2007-12-14 15:39 ` [PATCH 25/29] nfs: remove mempools Peter Zijlstra
2007-12-14 15:39 ` [PATCH 26/29] nfs: teach the NFS client how to treat PG_swapcache pages Peter Zijlstra
2007-12-14 15:39 ` [PATCH 27/29] nfs: disable data cache revalidation for swapfiles Peter Zijlstra
2007-12-14 15:39 ` [PATCH 28/29] nfs: enable swap on NFS Peter Zijlstra
2007-12-14 15:39 ` [PATCH 29/29] nfs: fix various memory recursions possible with swap over NFS Peter Zijlstra
2007-12-14 21:07 ` [PATCH 00/29] Swap over NFS -v15 Daniel Phillips
2007-12-19 22:22 ` Bill Davidsen
2007-12-20 8:00 ` Peter Zijlstra [this message]
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